{ "model": { "rank": 6092, "code": "thing-q6418", "model_id": "vr.tr.boeing-757", "name": "Boeing 757", "purpose": "Enable an AI agent to recognise a Boeing 757, establish the configuration and condition of an individual airframe, and identify actions supported by its documented limitations and approvals.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.OBJ", "industry": "", "version": "", "url": "/models/thing/q6418/", "tier": 2, "score": 62, "payload": { "layer": "wikidata", "aliases": [ "Boeing 757-200", "Boeing 757-300" ], "aliasCount": 2, "merged": 2, "knownIn": 62, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q6418", "url": "https://www.wikidata.org/wiki/Q6418", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T11:31:28Z", "providers": [ "Codex", "Grok" ], "missingProviders": [], "pass": 2, "cost": { "grok": { "usd": 0.01208632, "turns": 1, "seconds": 150.6, "error": null }, "codex": { "seconds": 88.7, "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: 01a07ba0-3f01-7db0-89a3-e4eb17daf485\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: Boeing 757\nRegistry id: vr.tr.boeing-757\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA V" } } }, "metaModel": { "id": "THING-Q6418", "registryId": "vr.tr.boeing-757", "name": "Boeing 757", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q6418/", "model": { "registry_id": "vr.tr.boeing-757", "name": "Boeing 757", "purpose": "Enable an AI agent to recognise a Boeing 757, establish the configuration and condition of an individual airframe, and identify actions supported by its documented limitations and approvals.", "definition": "The Boeing 757 is a twin-turbofan, single-aisle, medium-to-long-range jet airliner in Boeing's 7x7 family, type-certificated under FAR 25 as the 757-200 and stretched 757-300, produced 1981-2004, and characterised by a high landing-gear stance, large-fan PW2000 or RB211-535 engines, and field/ETOPS performance that supports high-hot takeoffs and transoceanic narrow-body sectors.", "scope_statement": "This model owns the Boeing 757 family within registry entry vr.tr.boeing-757, on PHY / PHY.OBJ, and the aircraft-level evidence needed to assess individual examples; it distinguishes family characteristics, variant-specific limits and airframe-specific facts.", "in_scope": [ "757 identity, variant, manufacturer serial number and registration history", "Installed engine configuration, passenger or freighter arrangement and approved modifications", "Aircraft-level structural condition, system serviceability and maintenance status", "Configuration-specific loading, performance and operating limitations", "Physical ground-handling compatibility and evidence supporting proposed aircraft actions" ], "out_of_scope": [ "Airline organisation, commercial strategy and route-network economics", "Airport infrastructure and airspace management as independent entities", "Detailed internal models of engines, avionics and other separately maintained components", "Flight execution, crew competence and operational control as independent processes", "Individual passenger, shipment and cargo-container records" ], "distinguishing_features": [ "Confirm that manufacturer identification and aircraft records identify a Boeing 757 and agree on the serial number; registration, livery and operator fleet labels alone do not establish identity.", "Compare fuselage proportions, landing-gear arrangement and overall geometry with the applicable 757 three-view drawing to distinguish visually similar 737, 767 and A321 aircraft. [Boeing three-view drawings](https://www.boeing.com/commercial/airports/3-view)", "Distinguish the 757-200 and longer 757-300 using documented variant and matching dimensions, rather than passenger count or airline branding. [Boeing 757 airport-planning reference](https://www.boeing.com/content/dam/boeing/v2/airports/acaps/757_Rev_H.pdf)", "Check the installed engine designation against applicable 757 records: the family uses Rolls-Royce RB211-535 or Pratt & Whitney PW2000-series engines, but engine-family resemblance alone cannot identify the aircraft. [Boeing 757 airport-planning reference](https://www.boeing.com/content/dam/boeing/v2/airports/acaps/757_Rev_H.pdf)", "Distinguish a factory 757-200PF from a converted passenger airframe through build and modification records; an external cargo door establishes neither conversion provenance nor approved loading limits." ], "characteristics": [ { "name": "Aircraft identity", "kind": "relation", "unit_or_values": "Manufacturer serial number linked to identification evidence and dated registrations", "why_it_matters": "Keeps maintenance and configuration evidence attached to the same airframe through operator and registration changes." }, { "name": "757 variant and role", "kind": "category", "unit_or_values": "Documented model designation; passenger, factory freighter, converted freighter or other documented configuration", "why_it_matters": "Determines which drawings, limitations and configuration records apply." }, { "name": "Installed propulsion configuration", "kind": "relation", "unit_or_values": "Left and right engine model, serial number, approved rating and installation evidence", "why_it_matters": "Prevents performance and maintenance assumptions from being transferred between incompatible engine configurations." }, { "name": "Modification baseline", "kind": "relation", "unit_or_values": "Applicable approved changes and supplements, including cargo conversion, winglets and avionics changes where installed", "why_it_matters": "The original variant designation does not fully describe a modified 757." }, { "name": "Operating masses and balance", "kind": "measurement", "unit_or_values": "kg or lb; centre of gravity in the approved reference system, with configuration and document revision", "why_it_matters": "Separates measured or calculated loading from the aircraft's applicable mass and balance limits." }, { "name": "Airframe utilisation", "kind": "measurement", "unit_or_values": "Flight hours and flight cycles, with record date and continuity assessment", "why_it_matters": "Supports evaluation of inspections and life limits without treating calendar age as sufficient evidence." }, { "name": "Structural and maintenance condition", "kind": "state", "unit_or_values": "Recorded defects, repairs, inspection results and outstanding tasks; current, overdue or unknown applicability", "why_it_matters": "Makes unresolved structural or maintenance constraints visible before further operation." }, { "name": "System serviceability", "kind": "state", "unit_or_values": "Serviceable, failed, degraded, deferred or unknown for each relevant aircraft system", "why_it_matters": "Connects observed faults to configuration-specific operating restrictions." }, { "name": "Ground envelope", "kind": "measurement", "unit_or_values": "Length, span, height, clearances and turning envelope in m or ft for the installed configuration", "why_it_matters": "Supports stand, hangar, taxi and equipment compatibility checks." }, { "name": "Action eligibility", "kind": "state", "unit_or_values": "Supported, conditional, unsupported or undetermined for a named action, with evidence date and conditions", "why_it_matters": "Avoids treating a generally serviceable 757 as automatically eligible for every flight, loading or maintenance action." } ], "affordances": [ "Identify a candidate airframe as a 757 and resolve its variant against authoritative records.", "Reconcile installed engines, cabin or cargo layout and modifications with the documented aircraft baseline.", "Screen a proposed payload and mission against the applicable loading and performance evidence.", "Identify maintenance, inspection or specialist review needed to resolve recorded defects and evidence gaps.", "Assess compatibility with a proposed stand, hangar, towing arrangement or servicing setup.", "Prepare an evidence-backed action recommendation for the responsible authorised personnel." ] }, "sources": [ { "id": "faa-tcds-a2nm", "title": "Type Certificate Data Sheet No. A2NM (Boeing 757)", "url": "", "what_it_supports": "Type identity, approved models (-200/-300 and derivatives), weights, engine options, and airworthiness basis under FAR 25." }, { "id": "boeing-acap-757", "title": "757 Airplane Characteristics for Airport Planning", "url": "", "what_it_supports": "Lengths, wingspans (with and without winglets), heights, MTOW bands, and airport-planning geometry used for measurements." }, { "id": "icao-doc-8643", "title": "Aircraft Type Designators (Doc 8643)", "url": "", "what_it_supports": "ICAO type designators B752 and B753 as the in-service identifiers used in flight plans and ATC." }, { "id": "wikipedia-boeing-757", "title": "Boeing 757", "url": "https://en.wikipedia.org/wiki/Boeing_757", "what_it_supports": "Production span and count, operator roles, variant list, and well-known accident/wake-turbulence history cross-checked against the specialist sources above.", "url_status": "live" } ], "structure": { "bundles": [ { "id": "757-identity-and-lineage", "name": "757 identity and lineage", "description": "Establishes which 757 is represented and how its identity persists through changes.", "rationale": "757 variant labels, registrations and freighter marketing names cannot substitute for airframe identity.", "layers": [ { "id": "airframe-identification", "name": "Airframe identification", "description": "Connects physical identification to the aircraft's documentary identity.", "findings": [ { "id": "identity-evidence", "name": "Identity evidence", "description": "Record the evidence identifying the airframe as a Boeing 757 and any conflicting identifiers.", "questions": [ { "text": "Which manufacturer identification and records establish the 757 model designation and serial number?", "kind": "definition", "id": "identity-evidence-q01" }, { "text": "Do the current registration and historical records refer consistently to this serial number?", "kind": "provenance", "id": "identity-evidence-q02" } ] } ] }, { "id": "variant-and-role-lineage", "name": "Variant and role lineage", "description": "Separates original manufacture from later operational configuration.", "findings": [ { "id": "build-and-conversion-history", "name": "Build and conversion history", "description": "Record original variant, subsequent role changes and the evidence authorising each change.", "questions": [ { "text": "Was this airframe built in passenger or freighter configuration, and what configuration does it have now?", "kind": "definition", "id": "build-and-conversion-history-q01" }, { "text": "Which records distinguish its original Boeing designation from any later freighter conversion designation?", "kind": "provenance", "id": "build-and-conversion-history-q02" } ] } ] } ] }, { "id": "757-installed-configuration", "name": "757 installed configuration", "description": "Describes the actual propulsion, payload arrangement and modifications of the aircraft.", "rationale": "A 757 family designation leaves substantial uncertainty about applicable equipment and limits.", "layers": [ { "id": "engines-and-modifications", "name": "Engines and modifications", "description": "Establishes the installed engine and modification baseline.", "findings": [ { "id": "configuration-applicability", "name": "Configuration applicability", "description": "Record installed engines and changes that affect the applicability of aircraft documentation.", "questions": [ { "text": "Which engine models, ratings and serial numbers are installed at the left and right positions?", "kind": "definition", "id": "configuration-applicability-q01" }, { "text": "Which approved changes, including winglets where fitted, require supplements or revised limits for this 757?", "kind": "boundary", "id": "configuration-applicability-q02" } ] } ] }, { "id": "passenger-and-freight-arrangement", "name": "Passenger and freight arrangement", "description": "Describes the approved usable cabin or cargo configuration.", "findings": [ { "id": "payload-accommodation", "name": "Payload accommodation", "description": "Record the installed arrangement and the constraints governing its use.", "questions": [ { "text": "What seating, exits, cargo positions, restraint equipment and compartment protections are documented for the installed arrangement?", "kind": "definition", "id": "payload-accommodation-q01" }, { "text": "What passenger or cargo use is permitted by this arrangement, and which proposed uses require a configuration change?", "kind": "action", "id": "payload-accommodation-q02" } ] } ] } ] }, { "id": "757-condition-and-continuing-airworthiness", "name": "757 condition and continuing airworthiness", "description": "Connects utilisation, inspections, repairs and faults to the aircraft's current condition.", "rationale": "An individual 757's operating history and modifications determine which condition evidence is relevant.", "layers": [ { "id": "structure-and-utilisation", "name": "Structure and utilisation", "description": "Relates structural evidence to accumulated use and the applicable maintenance baseline.", "findings": [ { "id": "structural-status-evidence", "name": "Structural status evidence", "description": "Record utilisation, inspection coverage and unresolved structural findings for the particular airframe.", "questions": [ { "text": "What are the verified flight hours and cycles, and where are there gaps in their continuity?", "kind": "measurement", "id": "structural-status-evidence-q01" }, { "text": "Which applicable inspections, repairs or directives remain unresolved, including requirements associated with cargo conversion or other structural changes?", "kind": "boundary", "id": "structural-status-evidence-q02" } ] } ] }, { "id": "systems-and-deferrals", "name": "Systems and deferrals", "description": "Interprets faults and maintenance deferrals using documents applicable to this 757.", "findings": [ { "id": "defect-disposition", "name": "Defect disposition", "description": "Record affected systems, fault evidence and documented conditions for further use.", "questions": [ { "text": "Which propulsion, flight-control, hydraulic, electrical, pressurisation or other relevant system defects are currently recorded?", "kind": "measurement", "id": "defect-disposition-q01" }, { "text": "Which defects have valid dispositions under the applicable approved documents, and what rectification deadlines or operating conditions follow?", "kind": "action", "id": "defect-disposition-q02" } ] } ] } ] }, { "id": "757-loading-and-flight-eligibility", "name": "757 loading and flight eligibility", "description": "Assesses proposed aircraft use against the applicable loading, performance and approval evidence.", "rationale": "Published family-level capacity or range figures cannot establish whether a particular 757 can perform a particular mission.", "layers": [ { "id": "mass-balance-and-performance", "name": "Mass, balance and performance", "description": "Connects the proposed load and operating conditions to the correct aircraft limits.", "findings": [ { "id": "mission-envelope-evidence", "name": "Mission envelope evidence", "description": "Record the inputs and authoritative results needed to judge a proposed mission.", "questions": [ { "text": "What current empty-weight and balance baseline, payload distribution and fuel load define the proposed loading?", "kind": "measurement", "id": "mission-envelope-evidence-q01" }, { "text": "Do applicable calculations support the proposed flight for this 757 variant, engine rating, modifications, runway conditions and system status?", "kind": "boundary", "id": "mission-envelope-evidence-q02" } ] } ] }, { "id": "operation-specific-eligibility", "name": "Operation-specific eligibility", "description": "Separates aircraft capability from the approvals and conditions needed for a particular operation.", "findings": [ { "id": "approval-and-release-evidence", "name": "Approval and release evidence", "description": "Record aircraft-specific eligibility and link the external approvals required for the intended use.", "questions": [ { "text": "What aircraft configuration and maintenance evidence support any proposed ETOPS, navigation or low-visibility operation?", "kind": "provenance", "id": "approval-and-release-evidence-q01" }, { "text": "Which operator approvals, crew qualifications and release decisions must be confirmed through neighbouring models before the proposed flight?", "kind": "action", "id": "approval-and-release-evidence-q02" } ] } ] } ] }, { "id": "757-ground-interface-and-preservation", "name": "757 ground interface and preservation", "description": "Describes physical ground compatibility and the condition changes associated with storage or return to service.", "rationale": "757 length, installed wing configuration, loading arrangement and maintenance state affect how the aircraft may be accommodated and handled.", "layers": [ { "id": "airport-and-equipment-fit", "name": "Airport and equipment fit", "description": "Checks the aircraft's actual geometry and servicing interfaces against proposed facilities.", "findings": [ { "id": "ground-compatibility-evidence", "name": "Ground compatibility evidence", "description": "Record dimensional and equipment evidence for the intended ground activity.", "questions": [ { "text": "What verified dimensions and clearances apply to this 757-200 or 757-300 with its installed wing and door configuration?", "kind": "measurement", "id": "ground-compatibility-evidence-q01" }, { "text": "Are the proposed stand, hangar, boarding or cargo equipment and towing arrangement compatible with that configuration?", "kind": "action", "id": "ground-compatibility-evidence-q02" } ] } ] }, { "id": "storage-and-reactivation", "name": "Storage and reactivation", "description": "Tracks preservation status and the work needed for a proposed change in use.", "findings": [ { "id": "preservation-status-evidence", "name": "Preservation status evidence", "description": "Record storage conditions, preservation work and unresolved reactivation requirements for the aircraft and installed engines.", "questions": [ { "text": "Which applicable 757 and installed-engine preservation tasks were performed, when, and with what evidence?", "kind": "provenance", "id": "preservation-status-evidence-q01" }, { "text": "What inspections, restoration tasks and authorised releases remain before this aircraft may be moved, powered or returned to flight?", "kind": "action", "id": "preservation-status-evidence-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": [ "757-200 passenger (baseline, various MTOW options including high-gross-weight transatlantic aircraft)", "757-300 stretched passenger", "757-200PF factory package freighter", "757-200M combi (mixed passenger/main-deck cargo)", "757-200 passenger-to-freighter conversions (PCF/SF and similar)", "C-32A/C-32B (United States Air Force 757-200 VIP and special-mission aircraft)", "PW2000-powered versus RB211-535-powered aircraft (the split operators actually roster and maintain)", "Winglet-equipped 757-200 (blended-winglet retrofit, treated as a performance/ICAO-wake operational variant rather than a new type)" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of Boeing 757 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": "Q19715", "note": "Item for the Boeing 757 type family." }, { "scheme": "ICAO aircraft type designator", "value_or_pattern": "B752 | B753", "note": "B752 = 757-200 (including PF/M/conversions); B753 = 757-300." }, { "scheme": "IATA aircraft type code", "value_or_pattern": "752 | 753", "note": "Used in schedules and SSIM; not a certification identity." }, { "scheme": "FAA type certificate", "value_or_pattern": "A2NM", "note": "Covers 757-200/-300 and listed derivatives." }, { "scheme": "Boeing customer model code", "value_or_pattern": "757-2xx | 757-3xx", "note": "xx is the airline customer code (e.g. 757-232 for Delta 757-200)." }, { "scheme": "Manufacturer serial number", "value_or_pattern": "Boeing MSN (line number also used in the fleet)", "note": "Airframe identity across passenger, converted, and military examples." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of Boeing 757 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": [ "FAA 14 CFR Part 25 airworthiness standards, as recorded on TCDS A2NM (Federal Aviation Administration)", "EASA CS-25 / inherited FAA type certificate for European-registered aircraft (European Union Aviation Safety Agency)", "ICAO Annex 8 (airworthiness) and Annex 16 (aircraft noise) applicable to the type in international operation (ICAO)", "ETOPS/EDTO rules for twin-engine transoceanic sectors, historically including ETOPS-180 authorisations under 14 CFR 121 (FAA; parallel EASA SPA.ETOPS)", "FAA wake-turbulence separation standards treating the 757 as a special case because of strong vortices relative to its weight class (FAA)", "14 CFR Part 36 / ICAO Chapter 3 (and later Chapter 4 where modified) noise certification (FAA; ICAO)", "National military airworthiness for C-32 (United States Air Force / Department of Defense), not the civil TCDS path" ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of Boeing 757 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": [ "Scheduled single-aisle trunk and transcontinental flying, especially from high-elevation or hot airports where the wing and thrust allow heavier takeoffs than a 737-class aircraft.", "Narrow-body ETOPS sectors (for example US East Coast-Europe and similar overwater pairs) that, for two decades, few other single-aisle types could cover economically.", "Factory and converted freighter work for integrators and cargo airlines: main-deck containers/pallets, night networks, and transcontinental parcels.", "US government VIP and special-mission flying as the C-32, including support airlift associated with the vice-presidential and other senior-travel missions.", "Charter and inclusive-tour flying in Europe and holiday markets, using the -200 and especially the high-capacity -300.", "Remaining passenger examples are aging out; a large share of the surviving fleet is now cargo-converted or government-operated, the last civil delivery having been in 2004." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of Boeing 757 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": "47.3 (757-200) to 54.5 (757-300)", "unit": "m" }, { "quantity": "Wingspan", "typical_range": "38.05 without winglets; about 41.1 with blended winglets", "unit": "m" }, { "quantity": "Maximum takeoff weight", "typical_range": "about 99800 (light 757-200) to 123800 (757-300)", "unit": "kg" }, { "quantity": "Typical two-class seating", "typical_range": "200-239 on -200; about 243-279 on -300 (certified exit limits higher, 239 and 295)", "unit": "seats" }, { "quantity": "Design range with typical passenger load", "typical_range": "about 3400 (757-300) to 3900 (high-gross 757-200)", "unit": "nmi" }, { "quantity": "Typical cruise", "typical_range": "Mach 0.80 (about 450-460 kn TAS in the upper troposphere)", "unit": "Mach" }, { "quantity": "Sea-level takeoff thrust per engine", "typical_range": "36600-43500 depending on PW2037/PW2040 or RB211-535E4/E4B rating", "unit": "lbf" }, { "quantity": "Maximum operating altitude", "typical_range": "42000", "unit": "ft" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of Boeing 757 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": [ "Unusually strong wake vortices for the weight class, requiring extra ATC spacing behind a 757 so that following aircraft are not rolled.", "Tailstrike on takeoff rotation or landing flare, more acute on the longer 757-300.", "Pitot or static-port blockage producing unreliable airspeed/altitude (the accident pattern illustrated by Birgenair 301 and Aeroperú 603).", "Controlled flight into terrain on non-precision or wrongly selected approaches (e.g. American 965 at Cali).", "Engine-out and uncontained-failure risk on ETOPS sectors; the type is a twin and was widely used far from diversion fields.", "Structural fatigue, corrosion, and wiring aging in late-life passenger airframes and in passenger-to-freighter conversions.", "Main-deck cargo fire on freighters, including lithium-battery consignments, with limited access once the door is closed.", "High approach speeds and wing loading that punish unstable approaches and hard landings, with gear and rear-fuselage overload." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of Boeing 757 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": [ "US operations and FAA documents often treat the 757 as its own wake-turbulence case; some other regulators historically folded it into ordinary 'heavy/medium' schemes with different spacing.", "US crew and dispatch language is 'seven-five-seven'; schedules use IATA 752/753. Engine choice (Pratt versus Rolls-Royce) is a live fleet-planning split.", "High-hot use is concentrated on western North America, Mexico, and Andean South America, which is why those regions kept the type longer for payload-limited runways.", "European use skewed toward charter/holiday flying and, later, to cargo conversions rather than dense short-haul scheduled work.", "Military C-32 identity is a United States designation; the same airframe elsewhere remains a civil 757-200 with a national registration.", "Passenger retirement is furthest along in some Asian and European fleets; North American cargo conversion absorbed many of the airframes." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of Boeing 757 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": "Boeing 767", "difference": "Same generation and a common crew type rating, but the 767 is a wide-body with two aisles and a larger-diameter fuselage; ICAO types are B762/B763, not B752/B753." }, { "name": "Airbus A321 / A321neo / A321XLR", "difference": "Closest single-aisle capacity competitor; distinguished by an Airbus cockpit and type rating, a lower stance, different engines and wing, and no 757-style FAA special wake category." }, { "name": "Boeing 737 (Classic/NG/MAX)", "difference": "Also a Boeing 3-3 single-aisle, but shorter-legged, with much smaller engines mounted closer to the ground and a lower landing-gear height; it does not match 757 field or ETOPS-range performance." }, { "name": "Boeing 727", "difference": "The trijet the 757 was bought to replace: three engines and a T-tail versus two underwing turbofans and a conventional tail." }, { "name": "Boeing 787 Dreamliner", "difference": "A later wide-body twin often used on some former 757 long thin routes; two aisles, composite structure, and a different type rating - not a 757 stretch." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of Boeing 757 this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does the existing Vercy catalogue already contain a world model covering the Boeing 757 that this registry entry should reference?", "Which authoritative type-design records establish the full set of 757 variant designations to represent beneath this single registry entry?", "Which passenger-to-freighter conversion programmes and document sets must be supported, and how should their differing configurations and limits be distinguished?", "Should military and other special-mission 757 derivatives be represented as configurations within this entry or linked to neighbouring models without duplicating aircraft identity?", "Which current, authoritative aircraft and operator documents will be available to establish limitations, maintenance applicability and operation-specific eligibility for individual airframes?" ], "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 Boeing 757, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to recognise a Boeing 757, establish the configuration and condition of an individual airframe, and identify actions supported by its documented limitations and approvals.", "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: Boeing 757-200, Boeing 757-300.", "2 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 Boeing 757, 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 Boeing 757 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": [ "Boeing 757-200", "Boeing 757-300" ] } ], "standing": "Described in 62 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 2 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 Boeing 757 from another, and a Boeing 757 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 Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 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 Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 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 Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 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 Boeing 757 is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 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 Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 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 Boeing 757 between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a Boeing 757 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 Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 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 Boeing 757 is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a Boeing 757 performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a Boeing 757 at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 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 Boeing 757 and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 Boeing 757 is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a Boeing 757, 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 Boeing 757, 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 Boeing 757 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 } } } }