{"id":"F2006B10992","name":"AD/JT8D/39 - Fuel Pump Inspection and Modification","slug":"ad-jt8d-39-fuel-pump-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56582,"registerId":"commonwealth-F2006B10992-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)\n\nPratt and Whitney Turbine Engines \\- JT8D Series","sortOrder":0},{"sectionNumber":"AD/JT8D/39 Fuel Pump Inspection and Modi","sectionType":"part","heading":"AD/JT8D/39 Fuel Pump Inspection and Modification 5/2002","content":"# AD/JT8D/39 Fuel Pump Inspection and Modification 5/2002\n\nDM\n\nApplicability: Pratt & Whitney JT8D-1, \\-1A, \\-7, \\-7A, \\- 7B, \\-9, 9A, \\-11, \\-15 and –15A series turbofan engines.\n\nRequirement: 1. Carry out the technical requirements of FAA Airworthiness Directive (AD) 2000- 22-06 amendment 39-11952 or, as an alternative\n\n2. Carry out the requirements of Pratt and Whitney Alert Service Bulletin JT8D A6381 Revision 1 dated 5 November, 2001.\n\nCompliance: Requirement 1: At the Time in Service (TIS) intervals stated in the FAA AD, calculated from 4 December 2000.\n\nRequirement 2: At the TIS intervals stated in Pratt and Whitney Alert Service Bulletin JT8D A6381 Revision 1 dated 5 November, 2001, calculated from 4 December 2000 (the effective date of FAA AD 2000-22-06).\n\nShould any of the TIS intervals stated in either of the above documents be exceeded at the effective date of this AD, the procedures and maintenance actions required at those intervals shall be carried out before further flight.\n\nThis Airworthiness Directive becomes effective on 10 April 2002.","sortOrder":1}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific unsafe condition in specific engine models. It has not expanded beyond its original safety purpose."},"complexity_factors":["Short, single-purpose document (approximately 250 words)","Only 2 substantive requirements with a clear alternative structure","Minimal defined terms (only 'TIS' for Time in Service, which is explained in context)","Single cross-reference to an external FAA directive and one manufacturer service bulletin","Simple conditional logic: 'if exceeded at effective date, do before further flight'","No nested exceptions or layered compliance structures"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection and modification of fuel pumps on specific Pratt & Whitney JT8D engines (used on aircraft such as the Boeing 727 and early 737s). Operators must comply by following either FAA AD 2000-22-06 or Pratt & Whitney Alert Service Bulletin JT8D A6381 Revision 1, with work required at specified time-in-service intervals.\n\nEffective 10 April 2002, the AD is mandatory: engines beyond the inspection threshold had to be fixed before further flight to prevent pump failures that can cause engine shutdowns or fires."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD does not broaden or narrow affected engines beyond the listed JT8D variants; it adopts compliance with an existing FAA AD or the manufacturer's Alert Service Bulletin and fixes the compliance timing (calculated from 4 December 2000). The only additional operational directive is that any intervals already exceeded at the AD's effective date must be completed before further flight (Requirement and Compliance)."},"complexity_factors":["Cross-reference to external mandatory documents: compliance is achieved by following FAA AD 2000-22-06 or Pratt & Whitney Alert Service Bulletin JT8D A6381 Rev.1 (Requirement 1–2).","Timing dependency: Time-in-Service (TIS) intervals must be calculated from a fixed date (4 December 2000), requiring historical records review (Compliance).","Alternative compliance path: two different authoritative sources may require different technical steps, creating choice and verification work for maintainers (Requirement 1–2).","Applicability breadth: applies to multiple JT8D engine variants, creating fleet-wide planning, parts and labour implications (Applicability).","Immediate operational constraint: any intervals already exceeded must be corrected before further flight, imposing potential out-of-service time and scheduling pressure (Compliance).","Enforcement and administrative basis: issued under CAR 1998 subregulation 39.1(1) by a CASA delegate, so compliance is mandatory and subject to regulator oversight (preamble)."],"plain_english_summary":"This Airworthiness Directive requires operators of Pratt & Whitney JT8D series engines to inspect and, if necessary, modify the fuel pump by following either FAA AD 2000-22-06 or Pratt & Whitney Alert Service Bulletin JT8D A6381 Revision 1. Compliance intervals are those set in the referenced documents, calculated from 4 December 2000; if an interval was already exceeded at this AD's effective date, the required work must be done before further flight. Operators fund and schedule the work; CASA enforces compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jt8d-39-fuel-pump-inspection-and-modification","history":"/api/acts/ad-jt8d-39-fuel-pump-inspection-and-modification/history","analysis":"/api/acts/ad-jt8d-39-fuel-pump-inspection-and-modification/analysis","conflicts":"/api/acts/ad-jt8d-39-fuel-pump-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-jt8d-39-fuel-pump-inspection-and-modification/important-cases","documents":"/api/acts/ad-jt8d-39-fuel-pump-inspection-and-modification/documents"}}