{"id":"F2007L01070","name":"AD/CF6/63 - Fwd Engine Mount Platform and Fwd Engine Mount Yoke","slug":"ad-cf6-63-fwd-engine-mount-platform-and-fwd-engine-mount-yoke","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":65039,"registerId":"commonwealth-F2007L01070-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"General Electric Turbine Engines - CF6 S","sectionType":"division","heading":"General Electric Turbine Engines - CF6 Series","content":"### General Electric Turbine Engines - CF6 Series\n\n| AD/CF6/63 | Fwd Engine Mount Platform andFwd Engine Mount Yoke | 5/2007 |\n| --------- | -------------------------------------------------- | ------ |\n\n| Applicability: | General Electric Company turbofan engines listed in FAA AD 2007-05-14, with cast titanium assembly engine mount platforms part numbers 1292M13G06, 1301M28G08, 1459M70G07, and 1846M24G04 and cast titanium assembly engine mount yokes part numbers 9383M43G14 and 9383M43G16, installed.The applicable engines are installed on, but not limited to, Boeing 747, Boeing 767, MD-11, Airbus A300-600, and Airbus A310 aircraft. |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2007-05-14 Amdt 39-14975.Note: General Electric Company Service Bulletins CF6-80C2 S/B 72-1206, dated23 December 2005, and CF6-80C2 S/B 72-1207 Revision 01, dated 5 July 2006, refer.                                                                                                                                                                            |\n| Compliance:    | As specified in the Requirement document, with a revised effective date of10 May 2007.                                                                                                                                                                                                                                                                                                                                           |\n|                | This Airworthiness Directive becomes effective on 10 May 2007.                                                                                                                                                                                                                                                                                                                                                                   |\n| Background:    | The FAA received a report of cracks, in a weld-repaired area on a forward engine mount platform and a forward engine mount yoke, detected during a fluorescent penetrant inspection. These parts were weld-repaired during manufacture. Undetected cracking in the forward engine mount platform and/or forward engine mount yoke could result in possible separation of the engine from the aircraft.                           |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n28 March 2007","sortOrder":0},{"sectionNumber":"AD/CF6/63","sectionType":"part","heading":"AD/CF6/63","content":"## AD/CF6/63","sortOrder":1},{"sectionNumber":"Fwd Engine Mount Platform andFwd Engine ","sectionType":"part","heading":"Fwd Engine Mount Platform andFwd Engine Mount Yoke","content":"## Fwd Engine Mount Platform and  \nFwd Engine Mount Yoke","sortOrder":2},{"sectionNumber":"5/2007","sectionType":"part","heading":"5/2007","content":"## 5/2007","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument adopts and enforces the FAA AD requirements for the listed CF6 parts without expanding or narrowing the set of affected parts or actions; it sets an Australian effective date but does not alter the FAA AD's substantive scope (Requirement; Applicability; Compliance)."},"complexity_factors":["Direct incorporation of an external FAA AD as the operative requirement rather than reproducing full technical text (Requirement: refers to FAA AD 2007-05-14 Amdt 39-14975).","Specific applicability limited to identified part numbers across multiple engine and aircraft types, requiring accurate parts tracing (Applicability: lists part numbers and aircraft types).","Reference to manufacturer service bulletins for technical details increases dependence on separate documents for implementation (Requirement: references GE Service Bulletins CF6-80C2 S/B 72-1206 and 72-1207).","Safety-critical inspection technique and historical repair condition (fluorescent penetrant inspection; parts were weld-repaired) imposes specialised maintenance actions and potential part removal/repair (Background).","Fixed compliance/effective date imposes a definite regulatory deadline for operators to meet (Compliance: effective 10 May 2007)."],"plain_english_summary":"Makes mandatory the inspection and any corrective actions set out in FAA Airworthiness Directive 2007-05-14 for specified General Electric CF6 forward engine mount platforms and yokes (part numbers listed). It takes effect on 10 May 2007 and applies to engines installed on a range of transport aircraft.\n\nThis affects aircraft operators and maintenance organisations that have those cast titanium, weld-repaired parts fitted, because cracks were found in weld-repaired areas that could lead to engine separation (Background)."},"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":3,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with narrow, targeted scope. It addresses a specific manufacturing defect in specific engine part numbers. There is no indication of scope creep; the directive precisely matches its original safety purpose of addressing cracked weld repairs in forward engine mounts."},"complexity_factors":["Short, single-purpose safety directive (approximately 300 words)","Only 6 specific part numbers identified, with clear applicability table","Incorporates external technical document by reference (FAA AD 2007-05-14) rather than reproducing full requirements","No defined terms section or interpretation provisions","Simple conditional structure: if you have these parts → you must do this action → by this date","Minimal cross-referencing (only to two GE service bulletins and one FAA directive)"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection of certain GE CF6 forward engine mount platforms and yokes — cast titanium parts that were welded during manufacture — after FAA findings of cracks that could lead to catastrophic engine separation. \n\nIt affects operators of Boeing 747/767, MD-11, Airbus A300-600/A310 with the listed part-numbered engines, requires compliance with FAA AD 2007-05-14 and GE service bulletins, effective 10 May 2007."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cf6-63-fwd-engine-mount-platform-and-fwd-engine-mount-yoke","history":"/api/acts/ad-cf6-63-fwd-engine-mount-platform-and-fwd-engine-mount-yoke/history","analysis":"/api/acts/ad-cf6-63-fwd-engine-mount-platform-and-fwd-engine-mount-yoke/analysis","conflicts":"/api/acts/ad-cf6-63-fwd-engine-mount-platform-and-fwd-engine-mount-yoke/conflicts","importantCases":"/api/acts/ad-cf6-63-fwd-engine-mount-platform-and-fwd-engine-mount-yoke/important-cases","documents":"/api/acts/ad-cf6-63-fwd-engine-mount-platform-and-fwd-engine-mount-yoke/documents"}}