{ "model": { "rank": 6077, "code": "thing-q6481", "model_id": "vr.tr.airbus-a340", "name": "Airbus A340", "purpose": "Enable an AI agent to identify an Airbus A340, assess the condition and limitations of a particular airframe, and determine which proposed uses or interventions its configuration and evidence support.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.OBJ", "industry": "", "version": "", "url": "/models/thing/q6481/", "tier": 2, "score": 62, "payload": { "layer": "wikidata", "aliases": [ "Airbus A340-200", "Airbus A340-600", "Airbus A340-500", "Airbus A340-300", "Airbus A340-211", "Airbus A340-212", "Airbus A340-213", "Airbus A340-312", "Airbus A340-311" ], "aliasCount": 9, "merged": 9, "knownIn": 62, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q6481", "url": "https://www.wikidata.org/wiki/Q6481", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T11:28:15Z", "providers": [ "Codex", "Grok" ], "missingProviders": [], "pass": 2, "cost": { "grok": { "usd": 0.01730668, "turns": 1, "seconds": 230.4, "error": null }, "codex": { "seconds": 98.8, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07b9a-5f85-7311-918b-58562e3ea3d8\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: Airbus A340\nRegistry id: vr.tr.airbus-a340\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA" } } }, "metaModel": { "id": "THING-Q6481", "registryId": "vr.tr.airbus-a340", "name": "Airbus A340", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q6481/", "model": { "registry_id": "vr.tr.airbus-a340", "name": "Airbus A340", "purpose": "Enable an AI agent to identify an Airbus A340, assess the condition and limitations of a particular airframe, and determine which proposed uses or interventions its configuration and evidence support.", "definition": "The Airbus A340 is a four-turbofan, twin-aisle, long-range large aeroplane family developed by Airbus as the four-engine counterpart to the A330 (shared fuselage cross-section, cockpit and much of the wing) and produced from 1991 to 2011 in the CFM International CFM56-5C-powered A340-200/300 and Rolls-Royce Trent 500-powered A340-500/600 series.", "scope_statement": "This model owns the Airbus A340 family registered as vr.tr.airbus-a340 in PHY / PHY.OBJ, including variant distinctions and individual aircraft identity, installed configuration, physical condition, operating limitations and lifecycle state; proposed actions require evidence applicable to the particular airframe.", "in_scope": [ "A340 family membership, exact variant, manufacturer serial number and registration history", "Installed engines, aircraft systems, cabin arrangements and approved modifications", "Aircraft mass, balance, fuel state and configuration-dependent performance limitations", "Structural condition, maintenance exposure, defects and aircraft release evidence", "Airport compatibility, ground servicing interfaces and preservation or retirement state" ], "out_of_scope": [ "Airbus corporate history, manufacturing business and programme economics", "Airline fleet strategy, ticket sales and commercial scheduling", "Flight plans, airspace clearances and weather as independently maintained operational objects", "Airport infrastructure and ground equipment specifications beyond their compatibility with this aircraft", "Detailed engine and component internals, linked through their installed relationships", "Crew licensing and maintenance organisation authorisations beyond evidence required for a proposed action" ], "distinguishing_features": [ "Check for four underwing engine installations: this separates the A340 from the twin-engine A330, although engine count alone does not establish identity. [Airbus aircraft history](https://www.airbus.com/en/newsroom/stories/2018-06-airbus-jetliners-a-standard-setting-history)", "For a proposed A340-200 or A340-300 identification, compare engine identification with the CFM56-5C installation documented by Airbus; a generic CFM56 label is insufficient. [Airbus A340-200/-300 characteristics](https://aircraft.airbus.com/sites/g/files/jlcbta126/files/2024-11/AC_A340-200_300_1124.pdf)", "For a proposed A340-500 or A340-600 identification, compare the installed propulsion configuration with the Trent 500 installation, distinguishing this group from the -200/-300 group. [Safran A340-500/-600 nacelle systems](https://www.safran-group.com/products-services/airbus-a340-500-600-nacelle-systems)", "Resolve similar-looking A340 variants by matching measured fuselage length, wing geometry and landing-gear arrangement against the relevant Airbus drawings, then confirm the exact designation through aircraft identity records. [A340-200/-300 drawings](https://aircraft.airbus.com/sites/g/files/jlcbta126/files/2024-11/AC_A340-200_300_1124.pdf), [A340-500/-600 drawings](https://www.airbus.com/sites/g/files/jlcbta136/files/2022-08/Airbus-Commercial-Aircraft-AC-A340-500_600.pdf)" ], "characteristics": [ { "name": "A340 variant and certified configuration", "kind": "category", "unit_or_values": "A340-200, A340-300, A340-500 or A340-600 family variant; exact certified designation and weight variant; unresolved", "why_it_matters": "Selects applicable aircraft data and prevents limits from one A340 configuration being assigned to another." }, { "name": "Airframe identity", "kind": "relation", "unit_or_values": "Manufacturer serial number linked to dated registrations and identity evidence", "why_it_matters": "Keeps maintenance and modification history attached to the physical aircraft when registration or operator changes." }, { "name": "Installed propulsion configuration", "kind": "relation", "unit_or_values": "Engine position linked to engine model, serial number, thrust rating and installation status", "why_it_matters": "Supports compatibility checks and assessment of the actual four-engine installation." }, { "name": "Mass and balance", "kind": "measurement", "unit_or_values": "kg for aircraft and load masses; centre of gravity in percent mean aerodynamic chord; timestamp and loading condition", "why_it_matters": "Determines whether the proposed loading fits the aircraft's applicable mass and balance envelope." }, { "name": "Fuel distribution", "kind": "measurement", "unit_or_values": "kg by installed tank, usable total, measurement time and uncertainty", "why_it_matters": "Supports endurance and balance assessment without treating total fuel quantity as sufficient evidence." }, { "name": "Airport fit", "kind": "measurement", "unit_or_values": "m for dimensions and clearance envelopes; aircraft configuration and applicable ground-load data", "why_it_matters": "Supports variant-specific stand, taxiway, hangar and servicing compatibility checks." }, { "name": "Cabin and hold configuration", "kind": "relation", "unit_or_values": "Approved layout linked to installed seats, exits, hold loading provisions and modification records", "why_it_matters": "Defines actual passenger and cargo accommodation instead of assuming a catalogue capacity." }, { "name": "Accumulated service exposure", "kind": "measurement", "unit_or_values": "Flight hours, flight cycles and calendar dates, with record completeness", "why_it_matters": "Supports assessment of maintenance due dates and life-limited items." }, { "name": "System and defect state", "kind": "state", "unit_or_values": "Serviceable, degraded, inoperative, isolated or unknown by system; dated defect evidence", "why_it_matters": "Makes combinations of propulsion, control, power and other defects visible." }, { "name": "Use and release status", "kind": "state", "unit_or_values": "In service, under maintenance, stored, preserved, retired or dismantling; separate documented release status and restrictions", "why_it_matters": "Distinguishes physical availability from evidence that a particular movement or operation is permitted." } ], "affordances": [ "Resolve an observed aircraft to an A340 variant and individual airframe, retaining conflicting identity evidence.", "Screen a proposed passenger, cargo or positioning mission against the aircraft's recorded configuration and applicable limitations.", "Assess compatibility with a proposed stand, hangar, towing arrangement or servicing resource.", "Identify defects, overdue work or missing records that require maintenance review before a proposed use.", "Compare a proposed engine replacement, cabin change or other modification with the aircraft's approved configuration.", "Prepare an evidence-based preservation, return-to-service or retirement work scope for authorised review." ] }, "sources": [ { "id": "src-wikipedia-a340", "title": "Airbus A340 - Wikipedia (Wikimedia Foundation)", "url": "https://en.wikipedia.org/wiki/Airbus_A340", "what_it_supports": "Family identity, series split (-200/-300/-500/-600), production span, operators and the Toronto AF358 hull-loss as a known overrun case.", "url_status": "live" }, { "id": "src-airbus-acap", "title": "A340 Airplane Characteristics for Airport Planning - Airbus", "url": "", "what_it_supports": "Published lengths, spans, maximum weights, engine options and airport-planning quantities for each series." }, { "id": "src-easa-tcds", "title": "Type Certificate Data Sheet EASA.A.015 (A330 and A340) - European Union Aviation Safety Agency", "url": "", "what_it_supports": "Certification identity of the family, approved models/engines, and airworthiness limitations that define the type." }, { "id": "src-icao-8643", "title": "Doc 8643, Aircraft Type Designators - International Civil Aviation Organization", "url": "", "what_it_supports": "ICAO type designators A342, A343, A345 and A346 as the operational names of the four series." } ], "structure": { "bundles": [ { "id": "a340-identity-and-effectivity", "name": "A340 identity and effectivity", "description": "Establish which A340 is represented and which technical records apply to it.", "rationale": "Family resemblance and shared naming do not establish interchangeable configurations or limitations.", "layers": [ { "id": "family-and-airframe-identification", "name": "Family and airframe identification", "description": "Connect recognition evidence to a particular variant and enduring airframe identity.", "findings": [ { "id": "confirmed-a340-identity", "name": "Confirmed A340 identity", "description": "Record the proposed designation, serial number, registration history and evidence resolving conflicting observations.", "questions": [ { "text": "Which manufacturer and registration records establish this airframe's serial number and exact A340 designation?", "kind": "provenance", "id": "confirmed-a340-identity-q01" }, { "text": "Which engine-installation and dimensional observations corroborate that designation, and which remain inconsistent?", "kind": "definition", "id": "confirmed-a340-identity-q02" } ] } ] }, { "id": "configuration-applicability", "name": "Configuration applicability", "description": "Separate the original aircraft standard from its present approved configuration.", "findings": [ { "id": "applicable-technical-baseline", "name": "Applicable technical baseline", "description": "Associate weight variant, modifications and installed standards with documents applicable to this serial number.", "questions": [ { "text": "Which weight variant, modifications and system standards are embodied on this A340?", "kind": "definition", "id": "applicable-technical-baseline-q01" }, { "text": "Which document revisions and effectivity statements support the limits used for this airframe?", "kind": "provenance", "id": "applicable-technical-baseline-q02" } ] } ] } ] }, { "id": "propulsion-and-system-capability", "name": "Propulsion and system capability", "description": "Represent the installed four-engine arrangement and the system conditions that constrain aircraft capability.", "rationale": "Neither four installed engines nor a family-level systems description establishes the capability of a particular aircraft.", "layers": [ { "id": "four-engine-installation", "name": "Four-engine installation", "description": "Track each engine position and the compatibility and condition of its installation.", "findings": [ { "id": "engine-position-readiness", "name": "Engine position readiness", "description": "Link each installed engine to its identity, rating, condition and unresolved installation restrictions.", "questions": [ { "text": "Which engine model, serial number and approved rating occupy each of the four positions?", "kind": "provenance", "id": "engine-position-readiness-q01" }, { "text": "Which recorded engine, nacelle or reverser defects constrain the proposed operation under applicable aircraft documents?", "kind": "action", "id": "engine-position-readiness-q02" } ] } ] }, { "id": "integrated-aircraft-systems", "name": "Integrated aircraft systems", "description": "Record the capability of flight controls, hydraulic and electrical power, pneumatics and auxiliary power as installed.", "findings": [ { "id": "combined-system-limitations", "name": "Combined system limitations", "description": "Represent actual system availability and interactions between defects without inferring dispatchability from isolated component states.", "questions": [ { "text": "What control-law status and hydraulic, electrical, pneumatic and auxiliary-power availability are recorded for this A340?", "kind": "measurement", "id": "combined-system-limitations-q01" }, { "text": "Which combinations of current defects require additional restrictions or prohibit the proposed action under applicable approved procedures?", "kind": "action", "id": "combined-system-limitations-q02" } ] } ] } ] }, { "id": "loading-fuel-and-mission-envelope", "name": "Loading, fuel and mission envelope", "description": "Connect actual cabin, hold and fuel configuration to loading and performance assessment.", "rationale": "An A340 family range or capacity figure cannot determine whether a particular loaded aircraft can perform a proposed mission.", "layers": [ { "id": "payload-and-balance", "name": "Payload and balance", "description": "Represent the installed accommodation and the distribution of people, cargo and aircraft mass.", "findings": [ { "id": "approved-loading-condition", "name": "Approved loading condition", "description": "Assess the proposed load against the actual layout, compartment restrictions, mass limits and centre-of-gravity envelope.", "questions": [ { "text": "Which approved cabin and hold arrangements define this A340's usable seats, loading positions and local load limits?", "kind": "provenance", "id": "approved-loading-condition-q01" }, { "text": "What are the proposed zero-fuel, takeoff and landing masses and corresponding centres of gravity, and where do they lie within the applicable envelopes?", "kind": "measurement", "id": "approved-loading-condition-q02" } ] } ] }, { "id": "fuel-and-performance", "name": "Fuel and performance", "description": "Connect installed fuel arrangements and system condition with mission-specific performance evidence.", "findings": [ { "id": "supported-mission-capability", "name": "Supported mission capability", "description": "Record tank quantities and restrictions alongside the assumptions and approved calculations supporting a proposed mission.", "questions": [ { "text": "Which fuel tanks are installed and usable, what quantity is recorded in each, and what transfer or balance restrictions apply?", "kind": "measurement", "id": "supported-mission-capability-q01" }, { "text": "Which applicable performance calculations support the proposed payload and route under the actual runway, weather, reserve and diversion assumptions?", "kind": "action", "id": "supported-mission-capability-q02" } ] } ] } ] }, { "id": "airport-fit-and-ground-handling", "name": "Airport fit and ground handling", "description": "Represent the geometric, ground-load and service interfaces required to handle the particular A340.", "rationale": "A stand or handling arrangement suitable for one A340 variant must be checked against the dimensions and configuration of another.", "layers": [ { "id": "clearance-and-ground-loads", "name": "Clearance and ground loads", "description": "Connect variant geometry and landing-gear loading to the proposed ground environment.", "findings": [ { "id": "verified-ground-envelope", "name": "Verified ground envelope", "description": "Record the evidence supporting taxi, stand and hangar fit at the intended mass and configuration.", "questions": [ { "text": "Which applicable drawings establish this A340's wing, tail, engine and turning-clearance envelopes?", "kind": "provenance", "id": "verified-ground-envelope-q01" }, { "text": "Do the proposed route, pavement, stand and hangar accommodate those envelopes and the aircraft's actual ground loading?", "kind": "boundary", "id": "verified-ground-envelope-q02" } ] } ] }, { "id": "movement-and-service-interfaces", "name": "Movement and service interfaces", "description": "Define aircraft-side requirements for towing, support equipment and servicing.", "findings": [ { "id": "compatible-ground-intervention", "name": "Compatible ground intervention", "description": "Associate a proposed intervention with suitable equipment, access locations and applicable aircraft handling instructions.", "questions": [ { "text": "Which towing attachment, steering restrictions, service connections and access heights apply to this A340 configuration?", "kind": "definition", "id": "compatible-ground-intervention-q01" }, { "text": "What equipment compatibility and aircraft preparation evidence is required before the proposed towing, jacking or servicing action?", "kind": "action", "id": "compatible-ground-intervention-q02" } ] } ] } ] }, { "id": "continued-airworthiness-and-lifecycle", "name": "Continued airworthiness and lifecycle", "description": "Represent accumulated exposure, maintenance findings and the evidence supporting service, storage or retirement decisions.", "rationale": "A340 identity and apparent completeness cannot establish structural condition, maintenance currency or readiness after storage.", "layers": [ { "id": "structural-and-maintenance-condition", "name": "Structural and maintenance condition", "description": "Connect service exposure and physical findings to the maintenance requirements applicable to the airframe.", "findings": [ { "id": "substantiated-maintenance-state", "name": "Substantiated maintenance state", "description": "Record hours, cycles, repairs, inspection findings and outstanding requirements with traceable evidence.", "questions": [ { "text": "What flight-hour, cycle and calendar records support the maintenance status of this A340 and its tracked installed components?", "kind": "provenance", "id": "substantiated-maintenance-state-q01" }, { "text": "Which structural findings, repairs, life limits, mandatory actions or inspection deadlines remain unresolved for its exact configuration?", "kind": "boundary", "id": "substantiated-maintenance-state-q02" } ] } ] }, { "id": "service-storage-and-retirement", "name": "Service, storage and retirement", "description": "Distinguish physical lifecycle state from documented permission for a particular use or transition.", "findings": [ { "id": "evidenced-lifecycle-transition", "name": "Evidenced lifecycle transition", "description": "Identify preservation history, removed equipment, outstanding work and release evidence needed for the proposed next state.", "questions": [ { "text": "What records establish this A340's present service or storage state, preservation history and removed or inhibited equipment?", "kind": "provenance", "id": "evidenced-lifecycle-transition-q01" }, { "text": "Which applicable work scope, inspections and authorised releases are required for its proposed return to service, restricted movement or dismantling?", "kind": "action", "id": "evidenced-lifecycle-transition-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-kinds", "name": "Kinds and varieties", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "A340-200 (short-fuselage, original long-range series)", "A340-300 (baseline and most-produced series, including later higher-weight Enhanced builds)", "A340-500 (ultra-long-range, Trent 500)", "A340-600 (stretched high-capacity, Trent 500; among the longest passenger fuselages flown)", "ACJ340 / VIP and head-of-state interiors", "Type-certificate dash-number subtypes (e.g. A340-211, A340-313, A340-541, A340-642) that encode engine, weight and customer variant" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of Airbus A340 this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "scheme": "Wikidata", "value_or_pattern": "Q6437", "note": "Item for the A340 family." }, { "scheme": "ICAO Doc 8643 type designator", "value_or_pattern": "A342 | A343 | A345 | A346", "note": "A340-200, -300, -500 and -600 respectively; the codes used in flight plans." }, { "scheme": "IATA aircraft type code", "value_or_pattern": "342 | 343 | 345 | 346", "note": "Schedule, slot and SSIM codes corresponding to the four series." }, { "scheme": "Airbus model designation", "value_or_pattern": "A340-2xx | A340-3xx | A340-5xx | A340-6xx", "note": "Third digit is the engine/weight/customer variant on the type certificate (e.g. A340-313, A340-642)." }, { "scheme": "EASA type certificate", "value_or_pattern": "EASA.A.015", "note": "Single TCDS covering the A330 and A340 families." }, { "scheme": "Airbus manufacturer serial number (MSN)", "value_or_pattern": "integer MSN in the shared A330/A340 production sequence", "note": "Airframe identity; the number space is not exclusive to the A340." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of Airbus A340 this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "EASA CS-25 (Large Aeroplanes) - European Union Aviation Safety Agency; TCDS EASA.A.015 is the current European type certificate for the A330/A340 family", "JAR-25 - Joint Aviation Authorities (original European certification basis at 1993 entry into service)", "14 CFR Part 25 - Federal Aviation Administration (US type validation of the A340)", "ICAO Annex 8, Airworthiness of Aircraft - International Civil Aviation Organization", "ICAO Annex 16 Volumes I and II (aircraft noise and engine emissions) - International Civil Aviation Organization", "ICAO Doc 8643, Aircraft Type Designators - International Civil Aviation Organization", "ICAO Annex 6, Operation of Aircraft - International Civil Aviation Organization (operator rules applying to the type in service)" ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of Airbus A340 this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "Long-haul scheduled passenger service on thin and ultra-long routes; historical mainline operators included Lufthansa, Air France, Iberia, Virgin Atlantic, Singapore Airlines, Cathay Pacific, South African Airways, Etihad, Qatar Airways, Thai Airways and Air Canada.", "Ultra-long-haul nonstop flying on the A340-500 (notably Singapore-Newark and other polar/transpacific sectors that four engines made straightforward before long-range twins took ETOPS-330).", "Government, military VIP and head-of-state transport (Luftwaffe and French government A340s; ACJ340 corporate conversions).", "ACMI, charter and Hajj lift after mainline retirement, using remaining high-MTOW -300/-600 airframes.", "Late remaining commercial flying after about 2020 concentrated with Iranian carriers (sanctions limiting access to A350/777 replacements) and a few specialist operators; retired frames are stored or parted out for CFM56-5C, Trent 500 and A330/A340-common spares." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of Airbus A340 this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "quantity": "overall length", "typical_range": "59.4-75.4", "unit": "m" }, { "quantity": "wingspan", "typical_range": "60.30-63.45", "unit": "m" }, { "quantity": "maximum take-off mass", "typical_range": "253500-380000", "unit": "kg" }, { "quantity": "design range in typical three-class layout", "typical_range": "12400-16700", "unit": "km" }, { "quantity": "typical two- or three-class seating (in-service layouts, not certified maximum)", "typical_range": "239-380", "unit": "passengers" }, { "quantity": "cruise Mach number", "typical_range": "0.82-0.83", "unit": "Mach" }, { "quantity": "take-off thrust per engine (four engines)", "typical_range": "139-267", "unit": "kN" }, { "quantity": "usable fuel capacity (family span)", "typical_range": "about 135000-215000", "unit": "L" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of Airbus A340 this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "Runway overrun on a wet or contaminated runway after a high-energy landing; Air France Flight 358 (A340-300, Toronto Pearson, 2005) is the type's best-known hull-loss example (no fatalities).", "Tailstrike on rotation or landing, especially on the long-fuselage A340-600; Airbus added tailstrike-prevention flight-control laws for that series.", "Engine failure or severe damage: the aeroplane can continue on three engines, but a second-engine loss over remote (oceanic/polar) airspace still imposes drift-down, fuel and diversion constraints even though the type is not ETOPS-limited as a twin.", "Fuel leak, pump failure or imbalance across a four-engine, multi-tank system, including centre-wing-tank flammability addressed industry-wide by SFAR 88 / inerting programmes.", "Structural fatigue, corrosion and landing-gear wear on ageing high-hour airframes (wing, centre section, body gear on -500/-600).", "Rejected-take-off brake and tyre energy at high MTOW on the -500/-600.", "Product-level economic failure versus long-range twins: four-engine fuel burn, not a unique structural defect, drove early retirement once A330/777/A350 ETOPS performance closed the original quad-jet case." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of Airbus A340 this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-regional-variation", "name": "Regional variation", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "ICAO flight-plan type (A343) versus IATA schedule code (343); the same airframe is named differently in ATC and in airport slots.", "No significant US major-airline scheduled service (Northwest's order was cancelled); the commercial market was Europe, Asia-Pacific, the Middle East, Africa and the CIS.", "After the 2010s twin replacement wave, remaining passenger use clustered in Iran (sanctions) and with a few ACMI/charter operators, while European and East Asian majors retired the type.", "Spoken operational name \"A three-forty\" in English versus \"A trois-cent-quarante\" in French Airbus/operator usage.", "ICAO Annex 16 Chapter 3/4 noise and airport charging regimes affect European night/slot access more tightly than some other regions for the remaining fleet." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of Airbus A340 this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "name": "Airbus A330-200/300", "difference": "Same family fuselage, cockpit and much of the wing; A330-300 is essentially the same length as A340-300. Count wing engines: two on the A330, four on the A340." }, { "name": "Airbus A350-900/1000", "difference": "Later long-range twin with a composite wing, different fuselage section and cockpit glazing, and no outboard engines." }, { "name": "Boeing 777-200ER/300ER", "difference": "Competing long-haul wide-body but a twin; six-wheel main bogies versus the A340's four-wheel mains (plus a centre-line body gear on the -500/-600)." }, { "name": "Boeing 747-400/8", "difference": "Also four wing engines, but identified by the upper-deck hump and a larger, different fuselage." }, { "name": "Airbus A380", "difference": "Four engines and a full-length double deck with a much larger cross-section; not a single-deck long-thin hauler." }, { "name": "McDonnell Douglas MD-11", "difference": "Same-era long-range wide-body, but a trijet with a tail-mounted engine rather than four wing engines." }, { "name": "Ilyushin Il-96", "difference": "Four-engine wide-body of similar role but Soviet/Russian design (PS-90 or PW2000), different wing, cockpit and systems; not an Airbus family member." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of Airbus A340 this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does an existing Vercy world model already own the Airbus A340 concept, requiring this registry entry to link to that publication?", "Which authoritative certification records establish the complete set of A340 designations, weight variants and serial-number effectivities to represent?", "Which variant-specific fuel-transfer, balance-control and landing-gear differences materially change the model's required observations and action boundaries?", "How should approved VIP interiors, special-purpose modifications and altered cargo arrangements be represented within this single registry entry?", "Which current aircraft and operator records are available to establish maintenance, defect-deferral, storage and release status, and how should conflicting or missing evidence block unsupported conclusions?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 18, "questions": 28 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "unclassified", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a Airbus A340, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to identify an Airbus A340, assess the condition and limitations of a particular airframe, and determine which proposed uses or interventions its configuration and evidence support.", "characteristics": { "substance": "material", "origin": "manufactured", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: Airbus A340-200, Airbus A340-600, Airbus A340-500, Airbus A340-300, Airbus A340-211, Airbus A340-212, Airbus A340-213, Airbus A340-312, Airbus A340-311.", "9 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 62 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a Airbus A340, and on what evidence are they told apart?" ], "whatItIsMadeOf": "matter you can touch", "physicalCharacter": [ "Mobility varies between examples.", "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Recognised by form and material. The registry holds no appearance data, so what a Airbus A340 looks like has to come from research." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "Airbus A340-200", "Airbus A340-600", "Airbus A340-500", "Airbus A340-300", "Airbus A340-211", "Airbus A340-212", "Airbus A340-213", "Airbus A340-312", "Airbus A340-311" ] } ], "standing": "Described in 62 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 9 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one Airbus A340 from another, and a Airbus A340 from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a Airbus A340 sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a Airbus A340 from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "form-and-composition", "name": "Form, composition and condition", "description": "What a Airbus A340 is made of, what shape and size it takes, and what state it is in.", "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.", "layers": [ { "id": "form-and-dimensions", "name": "Form and dimensions", "description": "Shape, size, mass and the ranges these take across examples.", "findings": [ { "id": "measurable-dimensions", "name": "Measurable dimensions and their units", "description": "The quantities worth recording and the units they are recorded in.", "questions": [ { "id": "measurable-dimensions-q01", "text": "What identifies and describes the dimensions of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "measurable-dimensions-q02", "text": "Who or what asserted this about the dimensions of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "measurable-dimensions-q03", "text": "What may an agent decide or do once the dimensions of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "material-and-composition", "name": "Material and composition", "description": "Materials, parts and how they are put together.", "findings": [ { "id": "parts-and-materials", "name": "Parts and materials", "description": "What a Airbus A340 is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "parts-and-materials-q02", "text": "Who or what asserted this about the composition of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "parts-and-materials-q03", "text": "What may an agent decide or do once the composition of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "condition-and-integrity", "name": "Condition and integrity", "description": "Wear, damage, health and the difference between working and broken.", "findings": [ { "id": "condition-assessment", "name": "Condition, damage and health", "description": "How the condition of a Airbus A340 is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "condition-assessment-q02", "text": "Who or what asserted this about the condition of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "condition-assessment-q03", "text": "What may an agent decide or do once the condition of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "place-and-movement", "name": "Place and movement", "description": "Where a Airbus A340 is, how it got there and where it may go (varies).", "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.", "layers": [ { "id": "location-and-placement", "name": "Location and placement", "description": "Position, containment and the reference frame the position is given in.", "findings": [ { "id": "position-and-frame", "name": "Position, container and reference frame", "description": "Where a Airbus A340 is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "position-and-frame-q02", "text": "Who or what asserted this about the location of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "position-and-frame-q03", "text": "What may an agent decide or do once the location of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "movement-and-transfer", "name": "Movement and transfer", "description": "How a Airbus A340 is carried, installed or relocated.", "findings": [ { "id": "movement-events", "name": "Movement events and constraints", "description": "What counts as a movement, what records it and what limits it.", "questions": [ { "id": "movement-events-q01", "text": "What identifies and describes the movement of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "movement-events-q02", "text": "Who or what asserted this about the movement of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "movement-events-q03", "text": "What may an agent decide or do once the movement of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a Airbus A340 passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a Airbus A340 between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a Airbus A340, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a Airbus A340 is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "use-and-operation", "name": "Use and operation", "description": "What can be done with a Airbus A340 and what it takes to do it.", "rationale": "An agent that can recognise a thing but not act on it has only half a model.", "layers": [ { "id": "intended-use", "name": "Intended use and function", "description": "What a Airbus A340 is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a Airbus A340 performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "function-and-purpose-q02", "text": "Who or what asserted this about the use of a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "function-and-purpose-q03", "text": "What may an agent decide or do once the use of a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "handling-and-procedure", "name": "Handling and procedure", "description": "The steps, skills and tools involved in using a Airbus A340.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a Airbus A340 at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "procedures-and-skills-q02", "text": "Who or what asserted this about handling a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "procedures-and-skills-q03", "text": "What may an agent decide or do once handling a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a Airbus A340 came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a Airbus A340 and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a Airbus A340 is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a Airbus A340, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a Airbus A340, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a Airbus A340 is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 6, "layers": 13, "findings": 15, "questions": 45 } } } }