{"id":"F2005L01311","name":"AD/JT8D/31 Amdt 1 - No. 7 Fuel Nozzle and Support Assembly","slug":"ad-jt8d-31-amdt-1-no-7-fuel-nozzle-and-support-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":35051,"registerId":"commonwealth-F2005L01311-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Pratt and Whitney Turbine Engines - JT8D","sectionType":"division","heading":"Pratt and Whitney Turbine Engines - JT8D Series","content":"### Pratt and Whitney Turbine Engines - JT8D Series\n\n| AD/JT8D/31 Amdt 1 | No. 7 Fuel Nozzle and Support Assembly | 7/2005 |\n| ----------------- | -------------------------------------- | ------ |\n\n| Applicability: | Pratt & Whitney (PW) Model JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR turbofan engines incorporating the original issue or any revision of Pratt & Whitney Service Bulletin No. 5650; and any PW Model JT8D engine with low emissions fuel nozzles, Part Numbers 775485, 809137-01, 802965, and 5004308-02 installed.                                                                                                                                                                                         |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | To prevent fuel leakage from the Number 7 fuel nozzle and support assembly and the resultant unsafe condition, carry out actions in accordance with the Requirements of FAA Airworthiness Directive 95-02-16 Amendment 39-9135.Note: FAA AD 95-02-16 Amendment 39-9135 refers.                                                                                                                                                                                                                                                                         |\n| Compliance:    | Unless previously accomplished, as per compliance schedule of the FAA AD95-02-16 Amendment 39-9135.                                                                                                                                                                                                                                                                                                                                                                                                                                                    |\n|                | This Amendment becomes effective on 7 July 2005.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |\n| Background:    | Fuel leakage from the Number 7 fuel nozzle and support assembly, ignition of that leaking fuel, and liberation of oil from melted oil line fittings can result in an uncontained engine fire and damage to the aircraft.The actions specified in this AD are aimed to address the unsafe conditions identified above.The current amendment deletes reference to the manufacturer’s document and refers to the FAA AD as part of the harmonisation with the engine certificating Authority requirements.Original issue became effective on 25 May 1995. |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n25 May 2005","sortOrder":0},{"sectionNumber":"AD/JT8D/31 Amdt 1","sectionType":"part","heading":"AD/JT8D/31 Amdt 1","content":"## AD/JT8D/31 Amdt 1","sortOrder":1},{"sectionNumber":"No. 7 Fuel Nozzle and Support Assembly","sectionType":"part","heading":"No. 7 Fuel Nozzle and Support Assembly","content":"## No. 7 Fuel Nozzle and Support Assembly","sortOrder":2},{"sectionNumber":"7/2005","sectionType":"part","heading":"7/2005","content":"## 7/2005","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of addressing the Number 7 fuel nozzle leak hazard. The only change is administrative: replacing manufacturer document references with direct reference to the FAA airworthiness directive. This harmonisation with the certificating authority does not expand or alter the substantive safety requirements."},"complexity_factors":["Short, single-purpose instrument (1 specific mechanical defect)","Only 4 defined applicability criteria (engine models and part numbers)","Single cross-reference to external FAA document rather than reproducing technical requirements","No nested exceptions or conditional logic — compliance is binary (do it or already done it)","Straightforward compliance timeline (refer to FAA AD schedule)"],"plain_english_summary":"This is an **airworthiness directive** (a mandatory safety order) for specific Pratt & Whitney jet engines used in aircraft. It requires airlines and aircraft operators to fix a dangerous fuel leak problem in the Number 7 fuel nozzle — a part that sprays fuel into the engine for combustion.\n\n**What the problem is:** Fuel can leak from this nozzle, catch fire, and melt nearby oil lines. This can cause an uncontained engine fire that damages the aircraft.\n\n**Who must comply:** Operators of aircraft with JT8D series engines (common in older Boeing 737s and similar aircraft) that have specific fuel nozzle models installed.\n\n**What must be done:** Operators must follow the repair instructions in an American safety order (FAA Airworthiness Directive 95-02-16) to inspect and fix the fuel nozzle assembly.\n\n**Why this version matters:** This 2005 update removes references to the manufacturer's own documents and instead points directly to the American aviation safety authority's rules. This \"harmonisation\" means Australian operators now follow the same standard as the US, making compliance simpler and ensuring consistency with the engine's original certifying authority."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This Amendment does not materially expand the Directive's substantive scope. It deletes a reference to a Pratt & Whitney manufacturer document and instead requires compliance with the FAA AD—a harmonisation/administrative change. The underlying safety obligation (inspect and correct No. 7 fuel nozzle leakage per the FAA AD) remains the same as the original AD; there is no addition of new categories of engines, nozzles, or new types of mandated action in this Amendment itself."},"complexity_factors":["Short instrument with limited number of operative provisions (Applicability, Requirement, Compliance, Background).","Single external cross-reference to FAA AD 95-02-16 Amendment 39-9135 for all technical actions and scheduling.","Applicability contains a moderately long list of engine models and four specific part numbers.","No detailed inspection/repair steps are set out in this instrument itself (those are deferred to the FAA AD), reducing local textual complexity but creating reliance on an external document.","Procedural change only (deletes manufacturer document reference) rather than substantive new obligations.","Compliance timing is not repeated here; readers must consult the FAA AD for conditional logic and deadlines."],"plain_english_summary":"This Amendment requires operators and maintenance organisations of specified Pratt & Whitney JT8D engines (and engines fitted with listed low‑emission No.7 fuel nozzles) to carry out the inspections and corrective actions prescribed in FAA AD 95‑02‑16 to stop fuel leaking from the No.7 nozzle and support assembly. It harmonises Australian requirements with the FAA AD, aims to prevent fuel‑ignition/engine fire risks, and imposes inspection, repair and replacement costs and downtime on affected operators."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-jt8d-31-amdt-1-no-7-fuel-nozzle-and-support-assembly","history":"/api/acts/ad-jt8d-31-amdt-1-no-7-fuel-nozzle-and-support-assembly/history","analysis":"/api/acts/ad-jt8d-31-amdt-1-no-7-fuel-nozzle-and-support-assembly/analysis","conflicts":"/api/acts/ad-jt8d-31-amdt-1-no-7-fuel-nozzle-and-support-assembly/conflicts","importantCases":"/api/acts/ad-jt8d-31-amdt-1-no-7-fuel-nozzle-and-support-assembly/important-cases","documents":"/api/acts/ad-jt8d-31-amdt-1-no-7-fuel-nozzle-and-support-assembly/documents"}}