{
  "title": "Aircraft manufacturing data for AI build-change effectivity",
  "source_page": "https://fiund.com/industries/aircraft-build-change-effectivity-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A neutral register change applies to one serial range",
    "context": "The fictional office register contains only unit identifiers and a change in document title. No design content appears.",
    "records": [
      [
        "1",
        "Index A",
        "Generic note N7 rev A covers U01–U20."
      ],
      [
        "2",
        "Index B",
        "Generic note N7 rev B covers U21–U40."
      ],
      [
        "3",
        "Build folders",
        "Two packets keyed U20 and U21; both currently point to B."
      ]
    ],
    "question": "Which folder link should be corrected?",
    "answer": "U20 should point to A because record 1 includes it at the upper boundary. U21 should keep B under record 2. Record 3 shows an overbroad update that applied B to both. These links convey only mock document applicability.",
    "failureModes": [
      "Treating the threshold as exclusive when specified inclusive",
      "Applying a later revision globally"
    ],
    "fields": [
      [
        "unit_serial",
        "Selects the applicable range"
      ],
      [
        "effectivity_interval",
        "Defines inclusive boundaries"
      ],
      [
        "document_link",
        "Records the actual folder reference"
      ]
    ],
    "holdout": "Add an explicit exception for one unit in the range and require respecting it without rewriting adjacent units.",
    "boundary": "Neutral document indexing only; no aircraft designs, engineering changes, build instructions or approvals."
  }
}