{"id":"F2010L00061","name":"AD/B747/155 Amdt 2 - Thrust Reverser Pneumatic Drive","slug":"ad-b747-155-amdt-2-thrust-reverser-pneumatic-drive","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":122740,"registerId":"commonwealth-F2010L00061-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 747 Series Aeroplanes","sectionType":"division","heading":"Boeing 747 Series Aeroplanes","content":"### Boeing 747 Series Aeroplanes\n\n| AD/B747/155 Amdt 2 | Thrust Reverser Pneumatic Drive | 1/2010 |\n| ------------------ | ------------------------------- | ------ |\n\n| Applicability: | Model 747SP, SR, 747-100, -200, and -300 series aeroplanes powered by Pratt & Whitney JT9D series engines (excluding model JT9D-70A engines).                                                                                                                                                                                                                                                                          |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2003-20-16 Amdt 39-13334.                                                                                                                                                                                                                                                                                                                               |\n| Compliance:    | At the intervals specified in FAA AD 2003-20-16. If not already accomplished, prior to initial issue of an Australian certificate of airworthiness.                                                                                                                                                                                                                                                                    |\n|                | This Amendment becomes effective on 8 January 2010.                                                                                                                                                                                                                                                                                                                                                                    |\n| Background:    | This Directive is intended to ensure the unit can restrain the thrust reverser sleeve to prevent inadvertent thrust reverser deployment that could lead to an uncontrolled flight condition. The original issue of this Directive specified FAA AD 95-16-02 and became effective on 9 November 1995.Amendment 1 became effective on 11 July 2002.This Amendment specifies FAA AD 2003-20-16 which superseded 95-16-02. |\n\n![](image.001.png)\n\nMike Higgins  \nDelegate of the Civil Aviation Safety Authority\n\n5 January 2010","sortOrder":0},{"sectionNumber":"AD/B747/155 Amdt 2","sectionType":"part","heading":"AD/B747/155 Amdt 2","content":"## AD/B747/155 Amdt 2","sortOrder":1},{"sectionNumber":"Thrust Reverser Pneumatic Drive","sectionType":"part","heading":"Thrust Reverser Pneumatic Drive","content":"## Thrust Reverser Pneumatic Drive","sortOrder":2},{"sectionNumber":"1/2010","sectionType":"part","heading":"1/2010","content":"## 1/2010","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a routine amendment updating the referenced FAA directive from the 1995 version (95-16-02) to the 2003 version (2003-20-16). The scope remains tightly focused on thrust reverser safety for the same limited aircraft fleet. No mission creep or expansion beyond original aviation safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 1 substantive requirement: comply with external FAA directive","No defined terms section — relies entirely on external technical reference","Simple conditional logic: 'if not already accomplished, do before certification'","Single applicability criterion with straightforward exclusions","No nested exceptions or cross-references to other Australian legislation"],"plain_english_summary":"This AD mandates inspections and maintenance of the thrust reverser pneumatic drive system on certain Boeing 747 SP, SR, 100/200/300 models with Pratt & Whitney JT9D engines (excluding JT9D-70A), to prevent accidental in‑flight reverser deployment. \n\nOperators must comply with the FAA’s AD 2003‑20‑16 and its inspection intervals; outstanding work must be completed before issuing or retaining Australian airworthiness certification. The rule restores tighter safety controls after earlier guidance."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"This amendment updates the prescribed external standard by specifying FAA AD 2003-20-16 (which superseded FAA AD 95-16-02). The underlying safety objective (prevent inadvertent thrust reverser deployment) is retained and the aircraft applicability is unchanged, but the technical requirements to be followed have been changed by adopting the superseding FAA AD."},"complexity_factors":["Cross-reference to an external FAA AD (FAA AD 2003-20-16) for the substantive technical requirements (Requirement) — operators must obtain and follow that document.","Specific applicability to multiple Boeing 747 variants and to Pratt & Whitney JT9D engines while expressly excluding JT9D-70A (Applicability) — requires careful fleet applicability checks.","Compliance timing ties to intervals specified in the FAA AD and a prerequisite for initial Australian airworthiness certification if not already accomplished (Compliance) — creates scheduling and certification dependencies.","Amendment history: supersedes earlier FAA AD 95-16-02 and replaces Amendment 1 (Background) — record-keeping and version-control issues for maintenance providers and regulators.","The instrument does not reproduce technical procedures; implementers must translate FAA-prescribed technical actions into maintenance tasks and demonstrate compliance (Requirement/Compliance).","Fixed effective date (8 January 2010) creates a hard compliance start point for outstanding work (Compliance)."],"plain_english_summary":"Requires certain Boeing 747s fitted with Pratt & Whitney JT9D engines (excluding JT9D-70A) to carry out the technical actions in FAA Airworthiness Directive 2003-20-16 so the thrust reverser pneumatic drive can restrain the reverser sleeve and prevent inadvertent deployment. Compliance must follow the intervals in the FAA AD and, if not already done, be completed before an Australian certificate of airworthiness is first issued; this amendment updates the reference to the superseding FAA AD."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-155-amdt-2-thrust-reverser-pneumatic-drive","history":"/api/acts/ad-b747-155-amdt-2-thrust-reverser-pneumatic-drive/history","analysis":"/api/acts/ad-b747-155-amdt-2-thrust-reverser-pneumatic-drive/analysis","conflicts":"/api/acts/ad-b747-155-amdt-2-thrust-reverser-pneumatic-drive/conflicts","importantCases":"/api/acts/ad-b747-155-amdt-2-thrust-reverser-pneumatic-drive/important-cases","documents":"/api/acts/ad-b747-155-amdt-2-thrust-reverser-pneumatic-drive/documents"}}