{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.douglas-a-33","code":"thing-q5301174","url":"https://ver.cy/models/thing/q5301174/","name":"Douglas A-33","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The Douglas A-33 was a designation applied by the United States Army Air Forces to requisitioned Douglas Model 8A-5 aircraft, a Norwegian-ordered, single-engine, two-seat attack aircraft derived from the Northrop A-17.","purpose":"Enable an agent to identify the Douglas A-33 aircraft type, distinguish its designation and configuration from related Northrop/Douglas aircraft, and assess evidence needed for interpretation, preservation or operation.","scope":{"in":["A-33 designation and its documented relationship to Douglas 8A-5 aircraft","Configuration differences from Northrop A-17 and other Douglas 8A variants","Powerplant, airframe, crew stations and mission equipment relevant to identification","Configuration-dependent performance and operating limitations","Evidence requirements for maintenance, preservation and permitted activity"],"out":["The complete Northrop A-17 and Douglas 8A family","Independent lifecycle models for individual serial-numbered airframes","Histories of Douglas, Norwegian aviation organisations or the USAAF","Detailed models of engines, weapons and ammunition","Campaign histories, combat tactics and flight-training curricula"],"boundaries":[]},"distinguishingFeatures":["Require a documented A-33 designation or a traceable relationship to the corresponding 8A-5 production configuration; resemblance to an A-17 alone is insufficient.","Check the exact 8A variant suffix in manufacturing and service records rather than treating every Douglas 8A as an A-33.","Compare engine installation, landing gear, cockpit arrangement and equipment against an authenticated 8A-5 reference before identifying an unlabelled photograph.","Distinguish an aircraft's manufacturer designation from its operator-assigned designation and markings; a Norwegian identity does not by itself establish USAAF A-33 service."],"structure":{"bundles":[{"id":"designation-and-lineage","name":"Designation and lineage","description":"Establishes what the A-33 name denotes within the Northrop/Douglas lineage.","layers":[{"id":"designation-boundary","name":"Designation boundary","description":"Separates manufacturer identity, service naming and catalogue usage.","findings":[{"id":"a-33-to-8a-5-relationship","name":"A-33 to 8A-5 relationship","description":"The Canadian Warplane Heritage Museum associates DB-8A-5/A-33 aircraft with the Norwegian procurement and identifies their A-17 lineage; the exact designation boundary still needs authoritative records. See [Flightlines, January/February 2017](https://www.warplane.com/documents/Flightlines-JANUARY-2017.pdf).","questions":[{"text":"Did A-33 formally designate all aircraft of this configuration or only those accepted into a particular service?","id":"a-33-to-8a-5-relationship-q01","kind":"boundary"},{"text":"Which manufacturer and military records establish the relationship among 8A-5, DB-8A-5 and A-33?","id":"a-33-to-8a-5-relationship-q02","kind":"provenance"}]}]},{"id":"family-differences","name":"Family differences","description":"Records the changes that justify identifying this entry separately from related aircraft.","findings":[{"id":"variant-specific-identification","name":"Variant-specific identification","description":"Recognition requires a documented difference set against A-17 and other 8A variants, rather than inherited family specifications.","questions":[{"text":"Which structural, engine-installation and equipment differences uniquely support an 8A-5 identification?","id":"variant-specific-identification-q01","kind":"definition"},{"text":"Which related variants remain visually indistinguishable without serial or production records?","id":"variant-specific-identification-q02","kind":"boundary"}]}]}]},{"id":"procurement-and-service-identity","name":"Procurement and service identity","description":"Tracks the evidence connecting Norwegian procurement, service designations and later custody.","layers":[{"id":"production-and-transfer","name":"Production and transfer","description":"Uses production and acceptance evidence to establish designation membership.","findings":[{"id":"serial-number-crosswalk","name":"Serial-number crosswalk","description":"Manufacturer numbers and operator serials should be linked through dated records before drawing conclusions about A-33 totals.","questions":[{"text":"Which manufacturer numbers can be connected directly to Norwegian identities and USAAF A-33 serials?","id":"serial-number-crosswalk-q01","kind":"provenance"},{"text":"Do differing published totals count orders, completed aircraft, surviving aircraft or service acceptances?","id":"serial-number-crosswalk-q02","kind":"measurement"}]}]},{"id":"role-and-configuration-history","name":"Role and configuration history","description":"Separates assigned use from the configuration enabling it.","findings":[{"id":"training-use-evidence","name":"Training-use evidence","description":"Record attack design intent and documented training use independently; a change of assignment does not prove a technical conversion.","questions":[{"text":"Which unit records establish training assignments for aircraft identified as A-33?","id":"training-use-evidence-q01","kind":"provenance"},{"text":"What equipment or control changes, if any, accompanied those assignments?","id":"training-use-evidence-q02","kind":"definition"}]}]}]},{"id":"airframe-and-powerplant","name":"Airframe and powerplant","description":"Defines the physical configuration needed to recognise and assess the A-33.","layers":[{"id":"structural-configuration","name":"Structural configuration","description":"Connects external recognition features with verified structural documentation.","findings":[{"id":"geometry-and-undercarriage","name":"Geometry and undercarriage","description":"A-33 geometry and landing-gear details require configuration-specific references rather than generic A-17 illustrations.","questions":[{"text":"What authenticated drawing establishes the 8A-5 dimensions and landing-gear arrangement?","id":"geometry-and-undercarriage-q01","kind":"measurement"},{"text":"Which airframe details distinguish an original configuration from a modification or reconstruction?","id":"geometry-and-undercarriage-q02","kind":"boundary"}]}]},{"id":"propulsion-and-supplies","name":"Propulsion and supplies","description":"Links the exact engine and propeller installation to its documented support requirements.","findings":[{"id":"installation-specific-requirements","name":"Installation-specific requirements","description":"Engine identity, output, fuel and oil requirements remain configuration-qualified until supported by applicable technical documents.","questions":[{"text":"Which engine and propeller models were specified and which substitutions are documented?","id":"installation-specific-requirements-q01","kind":"provenance"},{"text":"What ratings, fuel specifications and lubrication requirements apply to each supported installation?","id":"installation-specific-requirements-q02","kind":"measurement"}]}]}]},{"id":"crew-equipment-and-flight-envelope","name":"Crew, equipment and flight envelope","description":"Relates crew stations and mission equipment to loading and documented aircraft limits.","layers":[{"id":"crew-and-mission-fit","name":"Crew and mission fit","description":"Distinguishes specified equipment from actual service configurations.","findings":[{"id":"station-and-equipment-baseline","name":"Station and equipment baseline","description":"Record crew duties, control availability and mission-equipment presence for the applicable A-33 configuration without assuming every aircraft retained its delivery fit.","questions":[{"text":"What crew stations and controls are shown in authenticated 8A-5 or A-33 documentation?","id":"station-and-equipment-baseline-q01","kind":"definition"},{"text":"Which records distinguish proposed, delivered, removed and inert mission equipment?","id":"station-and-equipment-baseline-q02","kind":"provenance"}]}]},{"id":"loading-and-performance","name":"Loading and performance","description":"Makes performance comparisons conditional on a traceable loading and test basis.","findings":[{"id":"qualified-performance-values","name":"Qualified performance values","description":"Speed, range, ceiling and payload figures should remain separate claims until their variant, mass and test conditions are established.","questions":[{"text":"Which mass, fuel load, equipment fit and atmospheric conditions accompany each reported A-33 performance figure?","id":"qualified-performance-values-q01","kind":"measurement"},{"text":"Which approved document establishes loading, centre-of-gravity and flight limits for the configuration being assessed?","id":"qualified-performance-values-q02","kind":"provenance"}]}]}]},{"id":"technical-evidence-and-permitted-actions","name":"Technical evidence and permitted actions","description":"Defines what evidence is needed before acting on an attributed A-33 airframe or component.","layers":[{"id":"maintenance-applicability","name":"Maintenance applicability","description":"Determines which technical instructions and component evidence actually apply to the A-33.","findings":[{"id":"manuals-and-parts-compatibility","name":"Manuals and parts compatibility","description":"Shared A-17/8A ancestry is a lead for research, not proof of interchangeable parts or applicable maintenance instructions.","questions":[{"text":"Which manuals, parts catalogues and service instructions explicitly cover the A-33 or its verified 8A-5 configuration?","id":"manuals-and-parts-compatibility-q01","kind":"provenance"},{"text":"What documented differences prevent using an A-17 or another 8A variant's component or inspection instruction?","id":"manuals-and-parts-compatibility-q02","kind":"boundary"},{"text":"Which inspection findings or unresolved component identities require referral to an appropriately qualified specialist?","id":"manuals-and-parts-compatibility-q03","kind":"action"}]}]},{"id":"preservation-and-operation-decisions","name":"Preservation and operation decisions","description":"Connects intended activity to specimen evidence without presuming a surviving complete aircraft.","findings":[{"id":"activity-specific-evidence","name":"Activity-specific evidence","description":"For any claimed surviving airframe or assembly, assess authenticity, completeness and technical condition before recommending display, movement, restoration or operation.","questions":[{"text":"Does the object retain documented A-33 material and configuration, or is its attribution based on replica construction or markings?","id":"activity-specific-evidence-q01","kind":"boundary"},{"text":"What condition evidence and applicable authority are required for the proposed activity?","id":"activity-specific-evidence-q02","kind":"action"}]}]}]},{"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.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of Douglas A-33 this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of Douglas A-33 this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of Douglas A-33 this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of Douglas A-33 this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these regional variation hold for the sense of Douglas A-33 this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of Douglas A-33 this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Identify photographs or a surviving airframe as this requisitioned attack aircraft type.","Explain how an export order was diverted to wartime service, citing historical sources.","Distinguish it from other variants of the same export family."],"mustNot":["Present a different variant as this designation without evidence.","Invent service details or attribute losses to named crews without evidence.","Operate a surviving airframe without the owner's authority and airworthiness approval."],"requiresHuman":["Restoring or moving a surviving airframe.","Attributing an airframe to a specific serial number."]},"ethics":{"considerations":["Requisitioned export aircraft connect the history of several countries, including one under occupation.","Military history should be told without glorifying killing."],"affectedParties":["Historians and museums","Former crews and families"]},"owners":{"steward":"The museum or owner of any surviving example or remains; the state for items in public collections.","roles":[],"masterSystems":[]},"relations":[{"target":"Q76370260","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.douglas-a-33","Wikidata: Q5301174 (https://www.wikidata.org/wiki/Q5301174)"]},"properties":{"applicability":"required","items":["Designation applicability: Manufacturer designation ↔ service designation, qualified by operator, date and evidence","Configuration baseline: Documented production configuration; documented service modification; reconstruction; unresolved","Powerplant installation: Engine manufacturer and exact model, propeller model and installation reference","Rated engine output: kW and original hp convention, with rpm, altitude and rating duration","Airframe dimensions: Wingspan, length and height in m, with measurement configuration","Mass and loading envelope: kg for defined mass conditions; centre of gravity in the source's stated reference system","Crew and control arrangement: Station count, duties, installed controls and documented training modifications","Mission-equipment configuration: Specified; installed; removed; inert; unknown, qualified by airframe and date","Airworthiness evidence status: Unassessed; historical documentation only; incomplete technical basis; supported by applicable current authorisation"]},"recognition":{"applicability":"required","items":["Single-engine, two-seat low-wing monoplane with a long greenhouse canopy.","Fixed main undercarriage in fairings on this export family.","Military serials distinguish it from export variants."]},"capabilities":{"applicability":"required","items":["Resolve A-33 and 8A-5 references into a qualified designation relationship.","Compare a photograph, drawing or airframe record with documented A-33 configuration evidence.","Identify which A-17 or other 8A specifications require verification before reuse.","Compare performance claims only after aligning loading, equipment and test conditions.","Generate evidence requests for conservation, restoration or airworthiness assessment.","Explain the difference between intended attack capability and a documented training assignment."]},"hazards":{"applicability":"required","items":["Outdated design by the time of requisition, limiting combat use.","Surviving airframes may hold old fuel, oil and hazardous paint."]},"interfaces":{"applicability":"required","items":["The United States Army Air Forces officially assigned the A-33 designation within its attack aircraft classification."]},"context":{"applicability":"required","items":["The A-33 is encountered in historical accounts of military aircraft procurement and attack aviation during the Second World War.","Its designation is used in archival research and collection cataloguing to distinguish requisitioned aircraft from related variants originally ordered for other operators."]}},"sources":[{"title":"Wikidata item Q5301174: Douglas A-33","url":"https://www.wikidata.org/wiki/Q5301174","note":"identity and sense of the item"},{"title":"Wikipedia: Douglas A-33","url":"https://en.wikipedia.org/wiki/Douglas_A-33","note":"general description of the item"}],"openQuestions":["What is the authoritative extent of the A-33 designation, and how should 8A-5, DB-8A-5, 8A-5N and A-33-DE be related without assuming exact synonymy?","Can manufacturer and service records reconcile reported production, Norwegian delivery, USAAF acquisition and onward-transfer totals?","Which original technical documents establish the exact engine, propeller, crew controls, equipment and performance limits of each relevant configuration?","Are any complete airframes or authenticated substantial components extant, and what evidence establishes their identity and condition?","Does the existing Vercy catalogue already cover this concept within a world model, requiring a registry link instead of a separate publication?"],"resources":{"spec":"/models/things/publications/thing-q5301174/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q5301174/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T09:18:29Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:31+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}