{"id":"F2009L02331","name":"AD/PT6T/6 - Fuel Pump Coupling - Replacement - CANCELLED","slug":"ad-pt6t-6-fuel-pump-coupling-replacement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":79102,"registerId":"commonwealth-F2009L02331-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Pratt and Whitney Canada Turbine Engines","sectionType":"division","heading":"Pratt and Whitney Canada Turbine Engines - PT6T Series","content":"### Pratt and Whitney Canada Turbine Engines - PT6T Series\n\n| AD/PT6T/6 | Fuel Pump Coupling - Replacement | 7/2009 |\n| --------- | -------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                   |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 2 July 2009.                                                                                         |\n| Background:  | This unique Australian AD specified action in accordance with PWC SB No. 5184 by January 1981. The AD is no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n18 May 2009","sortOrder":0},{"sectionNumber":"AD/PT6T/6","sectionType":"part","heading":"AD/PT6T/6","content":"## AD/PT6T/6","sortOrder":1},{"sectionNumber":"Fuel Pump Coupling - Replacement","sectionType":"part","heading":"Fuel Pump Coupling - Replacement","content":"## Fuel Pump Coupling - Replacement","sortOrder":2},{"sectionNumber":"7/2009","sectionType":"part","heading":"7/2009","content":"## 7/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1360},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument completely revokes the previous Airworthiness Directive rather than modifying its scope. The original directive mandated specific maintenance action; this cancellation removes that requirement entirely without expanding, restricting, or altering the substantive scope of regulation."},"complexity_factors":["Single, unambiguous legislative action (cancellation of previous instrument)","No defined terms or interpretation sections","No conditional logic, exceptions, or cross-references to other legislation","Substantive content limited to two short sentences"],"plain_english_summary":"This document **cancels a previous aircraft safety rule** that required specific maintenance on helicopter engines.\n\n**What the old rule required:**\n- Aircraft owners had to replace **fuel pump couplings** on **Pratt & Whitney Canada PT6T series turbine engines** (used in many helicopters)\n- The work had to follow the manufacturer's Service Bulletin No. 5184\n- The deadline was **January 1981**\n\n**What this document does:**\n- **Cancels** the previous safety directive effective **2 July 2009**\n- Removes the legal requirement to perform that specific maintenance\n- The Civil Aviation Safety Authority decided the safety risk no longer exists, so the rule is unnecessary\n\n**Who is affected:**\n- Operators of aircraft with PT6T engines (such as some Bell helicopter models)\n- Aircraft maintenance engineers and organisations"}},"importantCases":[],"_links":{"self":"/api/acts/ad-pt6t-6-fuel-pump-coupling-replacement-cancelled","history":"/api/acts/ad-pt6t-6-fuel-pump-coupling-replacement-cancelled/history","analysis":"/api/acts/ad-pt6t-6-fuel-pump-coupling-replacement-cancelled/analysis","conflicts":"/api/acts/ad-pt6t-6-fuel-pump-coupling-replacement-cancelled/conflicts","importantCases":"/api/acts/ad-pt6t-6-fuel-pump-coupling-replacement-cancelled/important-cases","documents":"/api/acts/ad-pt6t-6-fuel-pump-coupling-replacement-cancelled/documents"}}