{
  "scope": "Unmeasured F20 support-extension architecture around unchanged F19 platform; shared catalog drawing and provisional handing do not identify the fitted support.",
  "source_groups": 4,
  "valid_positive_solids": 4,
  "retained_platform_mesh_identical": true,
  "retained_platform_native_volume_and_pose_held": true,
  "maximum_mesh_volume_error_percent": 0.003166753629924024,
  "mesh_errors_percent": {
    "later_heater_platform_formed_sheet_and_oblong_slot_comparison": 0.0004793971265293351,
    "heater_battery_support_provisional_lateral_wing": 6.8611782921834674e-12,
    "heater_battery_support_downstanding_slotted_leg_and_foot": 0.0009816777868154603,
    "heater_battery_support_raised_bored_rear_ear": 0.003166753629924024
  },
  "joined_construction_valid_single_solid": true,
  "joined_volume_equals_sum": true,
  "internal_positive_contacts_mm3": {},
  "ear_bore_and_leg_slot_open_with_material_witnesses": true,
  "selected_new_extension_neighbor_contacts_mm3": {},
  "unchanged_source_sha256": {
    "heater-assembly-reference.json": "b26ef57247f2a3a0ced3a146b373bb60ff7c2e3bef4990d25b48c2c94f5c9cf4",
    "heater-assembly-reference.step": "21845002605f61278602a5aabaf7e7c745e808b8b4b4fc03bd9903544ddd8522",
    "cabin-air-reference.json": "dbf6a7be324b19256f945af8834afcfc2fcebcb809938609bdc0602ade2382a8",
    "cabin-air-reference.step": "fcda948aa2118e876dfb2893a6838e7420d566acb3ca5f2496f0fe91ddd6074c",
    "front-footwell-reference.json": "9c392f41f7b9706c9f1f302a276a64837d43805ade367787c173b50c66e0e3e7",
    "front-footwell-reference.step": "f84bbdbb7ab418fc825bc04fbe0c862dcd9b2f80075e38c18efaf6ceeb4eb559",
    "cabin-understructure-reference.json": "8ce2e7e6422583f1e0bec408694fae2b4f999334c0786a13962a08ced845dcec",
    "cabin-understructure-reference.step": "b6111028c3bacffe4732be6c4d8521195590b97e90393863063c4ea66e6c9025",
    "pedal-support-reference.json": "d0518f3065e5159f2beaa7965ea40e48d122db1b4ce845b83a811fa2c35017b9",
    "pedal-support-reference.step": "b1ddce1a9a7844825445cd4efb030be0aeb87df08f153666ce64ce6124fc7443",
    "front-wheelhouse-reference.json": "57d1ca47dc78ba0c0701419fd2eed09bd71ca615280dff0e76af8504fa87a7af",
    "front-wheelhouse-reference.step": "d069970ca55d457bf54d635d3e09405a155683d692928e2b7267b6fb8695e1b6",
    "bay-electrical-reference.json": "1f93daa211222049b4ac59002163a5a781ad684537cf3290a3a05366402fc597",
    "bay-electrical-reference.step": "b79bb3e370906b24320a0a69cf06509b7969d4a038bc7d04da1d6a2c0f8a9f18",
    "steering-rack-reference.json": "8422f6fad064fabc2d1fedf9887135b1e5e2632e76087cb00efdff119194ab3b",
    "steering-rack-reference.step": "6d2f3eb033a4fa695ae1ab21da44cf30c4dcc895d160106198a06de654b61e73"
  },
  "construction": {
    "manufacturer_key": "F20",
    "catalog_roles": "BMH8010 later integral-fan complete support; BMH8019 earlier separate-fan support remains distinct. Shared drawing does not dimension either item.",
    "basis": "Lateral wing, downstanding leg/foot and raised ear follow qualitative shared F20 architecture. Profiles/dimensions/orientation are construction choices; no owner-fitted survey.",
    "owner_dimensions_applied": false,
    "provisional_handedness": "Positive-X lateral wing/leg and negative-X rear ear in the retained platform frame; actual fitted orientation is unknown. No mirrored second wing is inferred.",
    "estimated_gauge_mm": 1.2,
    "wing_outline_xz_body_mm": [
      [
        160.0,
        145.0
      ],
      [
        273.0,
        160.0
      ],
      [
        285.0,
        172.0
      ],
      [
        285.0,
        225.0
      ],
      [
        273.0,
        240.0
      ],
      [
        160.0,
        240.0
      ]
    ],
    "estimated_wing_length_mm": 125.0,
    "leg_z_bounds_body_mm": [
      350.0,
      443.8
    ],
    "estimated_leg_drop_mm": 45,
    "estimated_foot_extension_mm": 35,
    "estimated_leg_slot_length_width_mm": [
      65,
      12
    ],
    "leg_slot_center_body_mm": [
      160.0,
      573.2866666666666,
      396.9
    ],
    "rear_ear_axis_body_mm": [
      -202.0,
      624.2866666666666,
      130.0
    ],
    "estimated_ear_bore_radius_mm": 3,
    "estimated_ear_tip_y_body_mm": 640.2866666666666,
    "body_receivers_created": false,
    "joined_construction_valid_single_solid": true,
    "limits": "Source faces meet as butt-sheet construction, not a verified seam/lap/weld map, load path or strength. One ear hole and one leg slot are interpretation estimates, not fitted features or drilling/repair templates. No counterpart, fastener, support contact or loaded attachment is established. Subdivision is for inspection of a welded support role, not detachable-piece removal."
  },
  "body_receivers_created": false,
  "owner_measurements_applied": false,
  "limits": "Unselected catalog architecture, not an identified fitted CZJ174 or fabrication template. All dimensions, edge return directions/heights and installed stations are estimates. Oblong drawing feature is represented as an open-slot comparison; its fitted opening, airflow role and orientation are unverified. Three extension roles now supplement the retained platform. Their shapes, gauge, holes/slot, handedness, hidden attachments/weld/lap map and actual fitted correspondence remain unresolved. Support load path, heater base/body registration and cabin-air join are not established. No mounting screws or sealing contact are manufactured to close gaps. Heater, battery, tray, bulkhead, engine and cabin sources stay fixed. No strength, loaded support, fitted clearance or cutting/welding/removal procedure is verified.",
  "browser_validation": {
    "nativeMeshes": 4,
    "finiteVertices": 1364,
    "allAssembliesReady": 73,
    "metricPlacementAndPicking": true,
    "batteryTrayClampBoundsHeld": true,
    "sourceFailurePreservesOriginalRecord": true,
    "fixedBodyInspectionRoles": true,
    "isolation": true,
    "productionReloadWithoutHooks": true,
    "pageErrors": []
  },
  "study_validation": {
    "comparison_images_loaded": 2,
    "local_links_http_200": 8,
    "mobile_viewport_width_px": 390,
    "horizontal_overflow": false
  }
}