{
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    "schemaVersion": "INAV-DOSSIER-1",
    "generatedAt": "2026-10-28",
    "asOf": "2026-10-28",
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    "type": "regulation",
    "label": "Airworthiness Directives; Pratt & Whitney Division Engines",
    "url": "https://www.federalregister.gov/documents/2026/10/19/2026-21290/airworthiness-directives-pratt-and-whitney-division-engines",
    "attributes": {
      "summary": "The FAA is adopting a new airworthiness directive (AD) for all Pratt & Whitney Division (PW) Model PW4052, PW4056, PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4152, PW4156, PW4156A, PW4158, PW4460, and PW4462 engines. This AD was prompted by multiple reports of tailpipe fire, loss of thrust control, and engine in-flight shutdown due to undetected deterioration of pressure burner (Pb) sensors. Thi",
      "agency": "Transportation Department",
      "jurisdiction": "US",
      "effectiveDate": "2026-11-23",
      "daysUntilEffective": 26,
      "urgencyBand": "imminent",
      "urgencyRank": 4,
      "verticals": [],
      "keywords": [
        "airworthiness",
        "directives",
        "division",
        "engines",
        "pratt",
        "whitney"
      ]
    },
    "firstSeen": "2026-10-28",
    "sources": [
      "https://www.federalregister.gov/documents/2026/10/19/2026-21290/airworthiness-directives-pratt-and-whitney-division-engines",
      "data/regulatory-clock.json"
    ]
  },
  "type": "regulation",
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      "label": "Mandated by",
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        {
          "id": "idea:commercial-pool-shutdown-packets",
          "label": "Shutdown-proof packet builder for commercial pool operators",
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          "linkable": true,
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          "detail": "terms department, shutdown"
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  "analytics": {
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      "verticalReach": 0,
      "citationEdges": 1,
      "firstSeen": "2026-10-28",
      "primaryVertical": "construction-field-trades"
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  "signals": [
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      "label": "Reach",
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      "tone": "positive",
      "source": "/explore/"
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    {
      "label": "First seen",
      "value": "2026-10-28",
      "tone": "neutral",
      "source": "/changes/"
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    {
      "label": "Evidence",
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      "tone": "neutral",
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    }
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  "recommendedActions": [
    {
      "id": "explore-vertical",
      "label": "Explore construction-field-trades intelligence",
      "rationale": "This regulation evidences the construction-field-trades vertical — open its forward cut.",
      "href": "/pro/intelligence/construction-field-trades/"
    },
    {
      "id": "trace-graph",
      "label": "Trace in the graph explorer",
      "rationale": "Inspect every linked object and its provenance method.",
      "href": "/explore/"
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    {
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