{"id":"F2010L00155","name":"AD/CF34/13 Amdt 1 - Uncontained Fan Disk Failure - CANCELLED","slug":"ad-cf34-13-amdt-1-uncontained-fan-disk-failure-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":122927,"registerId":"commonwealth-F2010L00155-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"General Electric Turbine Engines - CF34 ","sectionType":"division","heading":"General Electric Turbine Engines - CF34 Series","content":"### General Electric Turbine Engines - CF34 Series\n\n| AD/CF34/13 Amdt 1 | Uncontained Fan Disk Failure | 2/2010 |\n| ----------------- | ---------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                           |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 11 February 2010                                                                                                                                                                                                                                                             |\n| Background:  | A State of Design airworthiness directive issued on or after 1 October 2009 is defined as an airworthiness directive per CASR Part 39.001A. The requirements of this airworthiness directive which referred to FAA AD 2007-05-16 have been superseded by FAA AD 2009-26-09 issued on 7 January 2010. |\n\n![](image.001.png)\n\nMike Higgins  \nDelegate of the Civil Aviation Safety Authority\n\n20 January 2010","sortOrder":0},{"sectionNumber":"AD/CF34/13 Amdt 1","sectionType":"part","heading":"AD/CF34/13 Amdt 1","content":"## AD/CF34/13 Amdt 1","sortOrder":1},{"sectionNumber":"Uncontained Fan Disk Failure","sectionType":"part","heading":"Uncontained Fan Disk Failure","content":"## Uncontained Fan Disk Failure","sortOrder":2},{"sectionNumber":"2/2010","sectionType":"part","heading":"2/2010","content":"## 2/2010","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1962},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the regulatory requirements of the original AD rather than expanding them. It removes compliance obligations for operators of CF34 engines rather than adding new scope or requirements."},"complexity_factors":["Single operative provision (cancellation of previous instrument)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Minimal cross-references (only to superseded FAA directives)","Extremely short length (under 200 words of operative text)"],"plain_english_summary":"**What this does**\nThis document officially cancels (revokes) a previous safety rule — Airworthiness Directive AD/CF34/13 Amendment 1 — that applied to General Electric CF34 aircraft engines.\n\n**Background**\nAirworthiness Directives (ADs) are legally binding safety rules that require aircraft owners to fix unsafe conditions. The original rule required specific maintenance to prevent \"uncontained fan disk failures\" (where engine parts break apart and fly outward).\n\n**Why it matters**\nThe Australian rule is no longer needed because the United States aviation safety regulator (FAA) issued a new directive in January 2010 that supersedes the old requirements. The cancellation takes effect on **11 February 2010**.\n\n**Who is affected**\nOperators of aircraft with GE CF34 series engines are no longer required to comply with the specific requirements of the cancelled directive, provided they follow the new FAA directive instead."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cf34-13-amdt-1-uncontained-fan-disk-failure-cancelled","history":"/api/acts/ad-cf34-13-amdt-1-uncontained-fan-disk-failure-cancelled/history","analysis":"/api/acts/ad-cf34-13-amdt-1-uncontained-fan-disk-failure-cancelled/analysis","conflicts":"/api/acts/ad-cf34-13-amdt-1-uncontained-fan-disk-failure-cancelled/conflicts","importantCases":"/api/acts/ad-cf34-13-amdt-1-uncontained-fan-disk-failure-cancelled/important-cases","documents":"/api/acts/ad-cf34-13-amdt-1-uncontained-fan-disk-failure-cancelled/documents"}}