{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T08:32:40Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 21.8,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\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: 01a094be-11db-78f2-b6b8-739e60cd0190\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: Cessna 411\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: 1001 regi",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 81.2,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\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: 01a094be-11dc-78d0-a510-8591868b20f6\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: Cessna 411\nRegistry id: vr.tr.cessna-411\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nCo"
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:50:46+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "failure_modes_and_hazards",
        "owners",
        "standards_and_regulation",
        "visual_identification"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:25+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q1057241",
    "registryId": "vr.tr.cessna-411",
    "name": "Cessna 411",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.OBJ"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q1057241/",
  "model": {
    "registry_id": "vr.tr.cessna-411",
    "name": "Cessna 411",
    "purpose": "Enable an AI agent to identify a Cessna 411, assess configuration and condition evidence, and determine which operating or maintenance decisions require aircraft-specific documentation and qualified authorization.",
    "definition": "The Cessna 411 is an unpressurized, low-wing, twin-engine piston aircraft model developed by Cessna for business and utility transport, with a retractable tricycle undercarriage and geared, turbocharged engines.",
    "scope_statement": "This model owns the type-specific recognition criteria, configuration dependencies, operating constraints and condition evidence for Cessna 411 under registry entry vr.tr.cessna-411 in PHY / PHY.OBJ; individual aircraft supply observations, while inclusion of the separately designated 411A remains a registry boundary question.",
    "in_scope": [
      "Cessna 411 identification through model designation, serial applicability and approved type-design records.",
      "Installed engine, propeller, fuel-system and equipment configurations relevant to type conformity.",
      "Aircraft-specific loading, performance and asymmetric-flight constraints.",
      "Condition evidence for propulsion, landing gear, flight controls and aging airframe systems.",
      "Applicability of flight manuals, maintenance instructions, modifications and airworthiness requirements."
    ],
    "out_of_scope": [
      "Separate models for individual aircraft registrations, ownership histories or transactions.",
      "Complete internal models of Continental engines, propellers or avionics products.",
      "Other Cessna aircraft types merely sharing a manufacturer or type certificate.",
      "Pilot qualification, operator certification and airport infrastructure as independent subjects.",
      "Flight planning, live aircraft control or maintenance procedures replacing approved instructions."
    ],
    "distinguishing_features": [
      "Require documentary identification as model 411; appearance, registration text and the generic description 'Cessna twin' are insufficient.",
      "Use the approved baseline of two Continental GTSIO-520-C engines as a configuration check, while requiring approval evidence for departures.",
      "Distinguish geared propulsion from direct-drive installations: the historical 411 certification record specifies a 0.750:1 reduction ratio.",
      "Treat 411 and 411A as distinct documentary designations until registry scope is resolved; a shared type certificate does not establish identical configuration.",
      "Check the model-specific section of A7CE because the certificate also covers other Cessna types."
    ],
    "characteristics": [
      {
        "name": "Certified model and serial applicability",
        "kind": "category",
        "unit_or_values": "Documented 411 designation and applicable serial range; conflicting or unverified",
        "why_it_matters": "Determines whether 411 instructions and limitations apply."
      },
      {
        "name": "Approved configuration evidence",
        "kind": "relation",
        "unit_or_values": "Links to applicable type-design records, equipment lists, modification approvals and manual supplements",
        "why_it_matters": "Separates an approved departure from the baseline from an unexplained mismatch."
      },
      {
        "name": "Installed propulsion configuration",
        "kind": "relation",
        "unit_or_values": "Left and right engine, reduction-gear and propeller identities with approval references",
        "why_it_matters": "Engine-family resemblance does not establish installation compatibility."
      },
      {
        "name": "Engine and propeller operating measurements",
        "kind": "measurement",
        "unit_or_values": "Engine and propeller rpm identified separately; manifold pressure in inHg; temperatures and pressures with explicit units",
        "why_it_matters": "Geared propulsion makes shaft identity essential when interpreting rotational limits."
      },
      {
        "name": "Fuel configuration and usable quantity",
        "kind": "measurement",
        "unit_or_values": "Tank-specific usable and unusable fuel in L or US gal, with installed configuration identified",
        "why_it_matters": "Capacity and availability must follow the actual tank and feed arrangement."
      },
      {
        "name": "Loading and balance",
        "kind": "measurement",
        "unit_or_values": "Mass in kg or lb; center of gravity in distance from a documented datum; compartment loads",
        "why_it_matters": "Total mass alone cannot establish acceptable passenger, baggage and fuel loading."
      },
      {
        "name": "Performance evidence",
        "kind": "relation",
        "unit_or_values": "Applicable manual chart, revision, configuration and environmental inputs",
        "why_it_matters": "Takeoff and engine-out capability cannot be inferred from a generic published performance figure."
      },
      {
        "name": "Landing-gear condition",
        "kind": "state",
        "unit_or_values": "Commanded position, indicated position, independently verified position and unresolved discrepancies",
        "why_it_matters": "An indication and a mechanically secured condition are different evidence."
      },
      {
        "name": "Maintenance and directive applicability",
        "kind": "state",
        "unit_or_values": "Verified compliant, due, overdue, applicability unresolved or evidence missing; dated and jurisdiction-specific",
        "why_it_matters": "Aircraft age or an inspection date alone does not establish current eligibility for operation."
      }
    ],
    "affordances": [
      "Match aircraft documents to the Cessna 411 type and flag conflicting model or serial evidence.",
      "Compare installed engines, propellers and equipment against applicable approvals.",
      "Check whether supplied loading and performance calculations use the correct configuration and manual.",
      "Identify discrepancies that require inspection or assessment by qualified personnel.",
      "Assemble a dated evidence package for maintenance planning and operational review.",
      "Explain which missing records prevent a supported conclusion about a proposed use."
    ],
    "agent_conduct": {
      "may": [
        "Read an aircraft's registration and check it against the civil aircraft register.",
        "Track maintenance, inspection and airworthiness directive status for the owner who authorised it.",
        "Describe the type's layout, engines and history."
      ],
      "must_not": [
        "Clear an aircraft to fly when inspections or airworthiness directives are overdue.",
        "Alter, backdate or fabricate maintenance or flight log entries.",
        "Operate engines or move the aircraft without an authorised, qualified person in control.",
        "Share an owner's flight history in a way that tracks them without consent or legal basis."
      ],
      "requires_human": [
        "Any go or no-go decision for a flight.",
        "Signing off maintenance or returning the aircraft to service."
      ]
    },
    "ethics": {
      "considerations": [
        "Ageing piston twins depend on honest maintenance records; falsified records kill crews and passengers."
      ],
      "affected_parties": [
        "Pilots and passengers",
        "People on the ground",
        "Owners and maintainers"
      ]
    },
    "owners": {
      "steward": "The registered owner and operator; the civil aviation authority holds the type certificate and registration records.",
      "master_systems": [
        "National civil aircraft registers"
      ]
    },
    "visual_identification": [
      "A low-wing twin with piston engines in long nacelles and a retractable tricycle undercarriage.",
      "A cabin with a row of side windows and a pointed nose with a baggage compartment."
    ],
    "failure_modes_and_hazards": [
      "Engine failure on take-off in a piston twin can lead to loss of control.",
      "Geared engines demand careful handling and maintenance to avoid failures.",
      "Fuel exhaustion or mismanagement between tanks."
    ],
    "standards_and_regulation": [
      "Airworthiness standards for normal category airplanes, 14 CFR Part 23, United States Federal Aviation Administration."
    ],
    "what_it_is_for": [
      "This aircraft model is encountered in business aviation, charter service and utility transport involving small passenger groups or light cargo.",
      "Surviving examples also appear in aircraft sales, maintenance records and historical collections, where configuration and service history inform assessments of their intended use."
    ]
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q1057241: Cessna 411",
      "url": "https://www.wikidata.org/wiki/Q1057241",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Cessna 411",
      "url": "https://en.wikipedia.org/wiki/Cessna_411",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "identity-and-type-boundary",
        "name": "Identity and type boundary",
        "description": "Establish what qualifies as the registered Cessna 411 concept and which aircraft records instantiate it.",
        "rationale": "The 411 designation, the 411A designation and the broader A7CE certificate must not be treated as interchangeable.",
        "layers": [
          {
            "id": "documentary-identification",
            "name": "Documentary identification",
            "description": "Resolve model identity from authoritative aircraft and certification records.",
            "findings": [
              {
                "id": "model-specific-certificate-evidence",
                "name": "Model-specific certificate evidence",
                "description": "Historical A7CE material lists 411 and 411A separately and specifies two GTSIO-520-C engines with a 0.750:1 reduction ratio. This supports baseline recognition, not current operational approval. Source: [FAA inspection authorization supplement containing A7CE](https://www.faa.gov/sites/faa.gov/files/training_testing/testing/supplements/FAA-CT-8080-8D.pdf).",
                "questions": [
                  {
                    "text": "Which model designation and serial number do the aircraft identification plate and supporting records establish?",
                    "kind": "provenance",
                    "id": "model-specific-certificate-evidence-q01"
                  },
                  {
                    "text": "Which applicable certification revision and serial-range provisions govern this aircraft?",
                    "kind": "boundary",
                    "id": "model-specific-certificate-evidence-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "registry-and-variant-scope",
            "name": "Registry and variant scope",
            "description": "Keep the registered concept distinct from related designations and individual airframes.",
            "findings": [
              {
                "id": "411a-inclusion-unresolved",
                "name": "411A inclusion unresolved",
                "description": "The supplied registry has no definition or folded names, so inclusion of 411A cannot be inferred solely from the entry title.",
                "questions": [
                  {
                    "text": "Does registry provenance define Cessna 411 as the exact certified model or a family including 411A?",
                    "kind": "boundary",
                    "id": "411a-inclusion-unresolved-q01"
                  },
                  {
                    "text": "Does an existing Vercy world model already own this concept and require a link instead of another publication?",
                    "kind": "provenance",
                    "id": "411a-inclusion-unresolved-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "geared-twin-propulsion",
        "name": "Geared twin propulsion",
        "description": "Capture installation conformity and condition evidence for the 411's paired geared engines and propellers.",
        "rationale": "Engine identity, reduction gearing and left-right differences directly affect interpretation of operating data and maintenance needs.",
        "layers": [
          {
            "id": "engine-propeller-conformity",
            "name": "Engine and propeller conformity",
            "description": "Associate each installed propulsion assembly with its applicable approval.",
            "findings": [
              {
                "id": "complete-installation-identity",
                "name": "Complete installation identity",
                "description": "Record exact engine and propeller identities for each side, including modifications; the baseline engine designation alone does not settle conformity.",
                "questions": [
                  {
                    "text": "What engine, propeller and governor models are installed on each side?",
                    "kind": "definition",
                    "id": "complete-installation-identity-q01"
                  },
                  {
                    "text": "Which approved records authorize each installation and any departure from the 411 baseline?",
                    "kind": "provenance",
                    "id": "complete-installation-identity-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "propulsion-condition-and-limits",
            "name": "Propulsion condition and limits",
            "description": "Interpret measurements and discrepancies against installation-specific instructions.",
            "findings": [
              {
                "id": "gearing-and-propeller-evidence",
                "name": "Gearing and propeller evidence",
                "description": "Keep engine rpm, propeller rpm, boost-related measurements, vibration reports and propeller-control condition distinct rather than compressing them into a single engine-health label.",
                "questions": [
                  {
                    "text": "Which shaft does each rpm value represent, and which approved limit applies?",
                    "kind": "measurement",
                    "id": "gearing-and-propeller-evidence-q01"
                  },
                  {
                    "text": "What recorded gearing, lubrication, vibration or propeller-control discrepancy requires assessment before further use?",
                    "kind": "action",
                    "id": "gearing-and-propeller-evidence-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "fuel-loading-and-performance",
        "name": "Fuel, loading and performance",
        "description": "Connect installed tank arrangements and payload distribution to supported performance judgments.",
        "rationale": "A 411's usable fuel, balance and engine-out capability must be evaluated for its actual configuration.",
        "layers": [
          {
            "id": "tank-and-payload-configuration",
            "name": "Tank and payload configuration",
            "description": "Establish available fuel and permissible distribution of occupants and baggage.",
            "findings": [
              {
                "id": "configuration-specific-loading",
                "name": "Configuration-specific loading",
                "description": "Represent installed tanks, usable quantities, approved seating, baggage stations and the current empty-weight record together.",
                "questions": [
                  {
                    "text": "Which tanks and feed arrangements are installed, and what approved document establishes their usable quantities?",
                    "kind": "measurement",
                    "id": "configuration-specific-loading-q01"
                  },
                  {
                    "text": "Does the proposed occupant, baggage and fuel distribution remain within the applicable mass, balance and compartment limits?",
                    "kind": "measurement",
                    "id": "configuration-specific-loading-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "asymmetric-performance",
            "name": "Asymmetric performance",
            "description": "Distinguish directional-control constraints from demonstrated climb capability with one engine inoperative.",
            "findings": [
              {
                "id": "engine-out-decision-evidence",
                "name": "Engine-out decision evidence",
                "description": "Require applicable 411 performance data and stated aircraft conditions before judging a proposed operation; twin engines alone do not establish continued-climb capability.",
                "questions": [
                  {
                    "text": "Which approved data and assumptions support the takeoff and one-engine-inoperative performance assessment?",
                    "kind": "provenance",
                    "id": "engine-out-decision-evidence-q01"
                  },
                  {
                    "text": "How do mass, atmospheric conditions, gear, flap and propeller state affect the assessed margins?",
                    "kind": "measurement",
                    "id": "engine-out-decision-evidence-q02"
                  },
                  {
                    "text": "What missing input or inadequate margin prevents support for the proposed operation?",
                    "kind": "action",
                    "id": "engine-out-decision-evidence-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "airframe-systems-and-condition",
        "name": "Airframe systems and condition",
        "description": "Organize evidence about landing gear, flight controls and installed utility systems on a particular 411.",
        "rationale": "Type recognition must connect to the actual mechanisms and discrepancies that determine aircraft readiness.",
        "layers": [
          {
            "id": "gear-and-flight-controls",
            "name": "Gear and flight controls",
            "description": "Separate commands, indications and verified mechanical condition.",
            "findings": [
              {
                "id": "configuration-and-mechanism-verification",
                "name": "Configuration and mechanism verification",
                "description": "Require applicable 411 documentation for gear operation, warning logic, emergency provisions and control-rigging assessments.",
                "questions": [
                  {
                    "text": "Which documents define the installed gear mechanism, warnings and emergency-extension provisions?",
                    "kind": "provenance",
                    "id": "configuration-and-mechanism-verification-q01"
                  },
                  {
                    "text": "What inspection evidence resolves gear-position discrepancies or concerns about control travel and rigging?",
                    "kind": "action",
                    "id": "configuration-and-mechanism-verification-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "installed-systems-and-aging",
            "name": "Installed systems and aging",
            "description": "Assess the aircraft's equipment and structural condition without assuming uniform equipment across the type.",
            "findings": [
              {
                "id": "equipment-and-structural-evidence",
                "name": "Equipment and structural evidence",
                "description": "Record fitted heating, oxygen and ice-protection equipment where present, alongside documented corrosion, repairs and condition of engine-support and landing-gear attachment areas.",
                "questions": [
                  {
                    "text": "Which cabin-support and ice-protection systems are installed, serviceable and approved for the proposed conditions?",
                    "kind": "boundary",
                    "id": "equipment-and-structural-evidence-q01"
                  },
                  {
                    "text": "What inspections and repair records establish the condition of structural areas identified by applicable maintenance instructions?",
                    "kind": "provenance",
                    "id": "equipment-and-structural-evidence-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "continued-airworthiness-and-use",
        "name": "Continued airworthiness and use",
        "description": "Connect configuration, maintenance evidence and operating approvals to decisions about a Cessna 411.",
        "rationale": "Historical type approval cannot by itself establish the present condition or permitted use of an individual aircraft.",
        "layers": [
          {
            "id": "maintenance-applicability",
            "name": "Maintenance applicability",
            "description": "Determine requirements from airframe and installed-component identities.",
            "findings": [
              {
                "id": "traceable-maintenance-status",
                "name": "Traceable maintenance status",
                "description": "Resolve directive applicability, inspections and component maintenance separately for the airframe, engines, propellers and modified equipment.",
                "questions": [
                  {
                    "text": "Which current directives and inspection requirements apply to this serial number and installed components?",
                    "kind": "provenance",
                    "id": "traceable-maintenance-status-q01"
                  },
                  {
                    "text": "Which records establish compliance, remaining intervals and unresolved discrepancies?",
                    "kind": "measurement",
                    "id": "traceable-maintenance-status-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "supported-use-decisions",
            "name": "Supported use decisions",
            "description": "Make the evidence and authority behind a proposed use explicit.",
            "findings": [
              {
                "id": "readiness-with-evidence-gaps",
                "name": "Readiness with evidence gaps",
                "description": "An agent may organize evidence and flag constraints; a readiness assessment must identify missing information and the qualified authority responsible for operational or maintenance release.",
                "questions": [
                  {
                    "text": "Which applicable flight manual, supplements and equipment limitations govern the proposed use?",
                    "kind": "provenance",
                    "id": "readiness-with-evidence-gaps-q01"
                  },
                  {
                    "text": "What unresolved discrepancy or missing approval requires qualified review before the aircraft can be released for that use?",
                    "kind": "action",
                    "id": "readiness-with-evidence-gaps-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-confidence-notes",
                "name": "Check these first",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "This description is recalled knowledge; no sources were consulted.",
                  "Check variant-specific engine designations, seating, dimensions, weights and performance against approved aircraft documentation.",
                  "The operating and maintenance regulations listed are not a statement of the aircraft's original type-certification basis; verify that basis and applicable directives separately."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-kinds",
                "name": "Kinds and varieties",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Cessna 411",
                  "Cessna 411A"
                ],
                "questions": [
                  {
                    "id": "evidence-kinds-q01",
                    "text": "Which of these kinds and varieties hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-identifiers",
                "name": "Identifiers and schemes",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "scheme": "Manufacturer model designation",
                    "value_or_pattern": "411; 411A",
                    "note": "Identifies the aircraft model or variant, rather than an individual airframe."
                  },
                  {
                    "scheme": "Manufacturer serial number",
                    "value_or_pattern": "Airframe-specific serial number",
                    "note": "Used to establish aircraft identity and the applicability of maintenance instructions and airworthiness requirements."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-identifiers-q01",
                    "text": "Which of these identifiers and schemes hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-standards-and-regulation",
                "name": "Standards and regulation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "FAA 14 CFR Part 91 governs general operating and flight rules for US operations.",
                  "FAA 14 CFR Part 43 governs applicable maintenance, preventive maintenance, rebuilding and alteration.",
                  "FAA airworthiness directives impose mandatory actions where applicable to the airframe, engines, propellers or installed equipment."
                ],
                "questions": [
                  {
                    "id": "evidence-standards-and-regulation-q01",
                    "text": "Which of these standards and regulation hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "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.",
                "evidence": [
                  "Business and executive transport",
                  "Air taxi and charter transport",
                  "Personal transport",
                  "Light cargo transport"
                ],
                "questions": [
                  {
                    "id": "evidence-real-world-use-q01",
                    "text": "Which of these real-world use hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-measurements",
                "name": "Typical measurements",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "quantity": "Rated takeoff power per engine",
                    "typical_range": "Approximately 340",
                    "unit": "hp"
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-measurements-q01",
                    "text": "Which of these typical measurements hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "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.",
                "evidence": [
                  "Loss of one engine creates asymmetric thrust and can cause loss of directional control at insufficient airspeed.",
                  "Engine-out climb capability depends strongly on aircraft mass, density altitude and configuration.",
                  "Geared, turbocharged engines require attention to lubrication, temperatures and manufacturer operating limits.",
                  "Landing-gear malfunction or incorrect configuration can result in a gear-up landing or gear collapse.",
                  "Airframe icing can impair lift, increase drag and reduce control margins."
                ],
                "questions": [
                  {
                    "id": "evidence-failure-modes-and-hazards-q01",
                    "text": "Which of these failure modes and hazards hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-regional-variation",
                "name": "Regional variation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Registration, maintenance oversight and operational permissions depend on the state of registry and the jurisdiction of operation."
                ],
                "questions": [
                  {
                    "id": "evidence-regional-variation-q01",
                    "text": "Which of these regional variation hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "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.",
                "evidence": [
                  {
                    "name": "Cessna 401",
                    "difference": "A separate unpressurized twin-engine model using direct-drive engines rather than the 411's geared engines."
                  },
                  {
                    "name": "Cessna 421",
                    "difference": "A related twin-engine aircraft model with a pressurized cabin; the 411 is unpressurized."
                  },
                  {
                    "name": "Individual Cessna 411 airframe",
                    "difference": "A physical aircraft identified by serial number and registration, rather than the model represented by this entry."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of Cessna 411 this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Does registry entry vr.tr.cessna-411 cover only certified model 411, or also 411A, and does an existing world model already cover that scope?",
    "What current authoritative type-design and flight-manual revisions establish serial-specific dimensions, seating, weights, speeds and performance limits?",
    "Which fuel-system, propeller and engine modifications are approved for the 411, and how do they change capacities and operating limitations?",
    "Which manufacturer instructions and current directives establish 411-specific inspection priorities, recurring requirements and documented failure concerns?",
    "What cabin-altitude, oxygen and icing restrictions apply to each relevant equipment configuration?"
  ],
  "statistics": {
    "bundles": 6,
    "layers": 11,
    "findings": 19,
    "questions": 30
  }
}
