{"id":"F2006B08453","name":"AD/CF34/6 Amdt 2 - Life Limited Rotating Engine Parts","slug":"ad-cf34-6-amdt-2-life-limited-rotating-engine-parts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51083,"registerId":"commonwealth-F2006B08453-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CF34/6 Amdt 2 - Life Limited Rotating Engine Parts","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/CF34/6 Amdt 1 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nGeneral Electric Turbine Engines \\- CF34 Series\n\nAD/CF34/6\n\nAmdt 2\n\n  \nLife Limited Rotating Engine Parts 10/2002\n\nApplicability: General Electric (GE) CF34-3A1 and \\-3B1 series engines.\n\nRequirement: Amend the GE CF34-3A1 and \\-3B1 series turbofan engine manual SEI-756, Chapter 5-21-00 to include the inspection requirements of FAA AD 2002-05-02 CORR.\n\nNote: FAA AD 2002-05-02 CORR, Amdt 39-12670, refers which corrects an error in the FAA AD 2002-05-02.\n\nCompliance: Within 30 days after the effective date of this directive. This Amendment becomes effective on 3 October 2002.\n\nBackground: The actions mandated in this Airworthiness Directive are intended to prevent critical life limited rotating engine part failures, which could result in uncontained engine failure and damage to the aircraft.\n\nAmendment 1 of this Airworthiness Directive became effective on 16 May 2002.\n\nThe original issue of this Airworthiness Directive became effective on 6 September 2001.\n\n![Signature of James Coyne Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 23 August 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 11 September 2002.\n\n  \nPage 1 of 1","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of addressing life-limited rotating engine parts for CF34 engines. It is a technical correction amendment — updating the incorporated FAA reference to use the corrected version (2002-05-02 CORR instead of 2002-05-02). The scope remains narrowly focused on the same safety issue (preventing uncontained engine failures) for the same engine models."},"complexity_factors":["Short, single-page document with straightforward structure","Only 2 defined engine models in applicability section","Single requirement with one cross-reference to external FAA document","Simple compliance timeline (30 days from effective date)","No nested exceptions or conditional logic","Clear background explaining safety rationale","Revokes only one previous amendment (Amendment 1) with clear lineage"],"plain_english_summary":"This CASA Airworthiness Directive updates a prior safety order for GE CF34-3A1 and CF34-3B1 turbofan engines, requiring operators to amend maintenance manual SEI-756 to incorporate corrected FAA inspection instructions. It affects anyone operating or maintaining these engines (e.g., regional CRJ operators) and matters because the inspections reduce risk of catastrophic uncontained engine failure. Compliance is required within 30 days of the 3 Oct 2002 effective date."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment does not expand the original safety objective. It revokes the earlier amendment and replaces it with a version that incorporates the corrected FAA AD (FAA AD 2002-05-02 CORR) into the engine maintenance manual requirement. The mandate remains focused on preventing life-limited rotating part failures for the same CF34-3 series engines; it updates the technical reference but does not materially broaden the set of affected products or the AD’s regulatory reach."},"complexity_factors":["Short, single-purpose AD with one clear requirement (manual amendment to include FAA AD CORR inspection requirements).","Only two engine models listed in the applicability (CF34-3A1 and -3B1).","Single compliance deadline (within 30 days).","One external cross-reference (FAA AD 2002-05-02 CORR) — the only substantive cross-reference in the text.","No nested exceptions, conditional pathways, or multiple compliance alternatives.","Administrative detail only (amendment to a specific chapter of an engine manual); no new certification processes or complex record-keeping schemes introduced."],"plain_english_summary":"**What this instrument does (mechanically)**\n\n- Requires that the maintenance/inspection chapter for General Electric CF34-3A1 and CF34-3B1 turbofan engines (engine manual SEI-756, Chapter 5-21-00) be amended to include the inspection steps and requirements set out in FAA AD 2002-05-02 CORR (a corrected FAA airworthiness directive).\n- Sets a compliance deadline: the manual must be amended within 30 days of the AD becoming effective (the AD lists 3 October 2002 as the effective date).\n- Revokes the previous amendment (AD/CF34/6 Amdt 1) and replaces it with this amendment.\n\n**Who is affected**\n\n- Aircraft operators and owners who operate aeroplanes powered by GE CF34-3A1 or CF34-3B1 engines.\n- Maintenance organisations and licensed aircraft engineers who perform engine maintenance and inspections on those engines.\n- The party responsible for the engine maintenance documentation (typically the engine manufacturer and/or the operator's approved maintenance organisation) must amend the engine manual.\n\n**Why it matters (stated purpose and immediate safety mechanism)**\n\n- The AD's stated purpose is to prevent failures of \"life limited rotating engine parts\". Such failures can be critical because a failed rotating part can be released with high energy, produce an \"uncontained engine failure\", and cause damage to the aircraft.\n- The AD achieves that by imposing specific inspection requirements (copied from the referenced FAA AD CORR) into the engine maintenance manual so the inspections become part of mandatory, regulated maintenance practice.\n\n**Who pays, who decides, and what behaviour changes**\n\n- Who pays: aircraft operators (or their maintenance contracts) will bear the direct costs — labour for inspections, any additional maintenance downtime, and replacement of parts if inspections find defects.\n- Who decides: the Civil Aviation Safety Authority (through its delegate) issues the AD; operators and approved maintenance organisations implement it. The AD, by law, makes the inspection requirement mandatory for the affected engines in Australia.\n- Behaviour change: affected operators must update their maintenance manuals and perform the specified inspections within the regulated schedule; maintenance providers must follow the inspection procedures from the FAA AD as incorporated into the manual.\n\n**Trade-offs, costs, and implementation issues**\n\n- Costs and allocation: the AD creates compliance costs (administrative amendment of manuals, inspector labour, possible increased part replacements, aircraft downtime). These costs fall on operators and their maintenance providers, not on CASA.\n- Timing and operational risk: the 30-day compliance window is short, which may force rescheduling of maintenance work and could cause short-term capacity pressure for maintenance organisations or temporary aircraft grounding if inspections cannot be performed in-service.\n- Cross-jurisdictional reliance: the AD adopts an FAA correction (FAA AD 2002-05-02 CORR). That reduces duplication by aligning Australian requirements with a U.S. regulator’s actions, but it ties Australia’s compliance requirements to updates and corrections from the FAA; operators must watch for further FAA changes to ensure manuals remain current.\n- Effects on competition and business: independent maintenance organisations must meet the same requirements as OEM-authorised shops. There is no express exemption or preference in the AD; compliance costs may be proportionally larger for smaller operators, which could affect their operating costs and scheduling flexibility.\n\n**Concentrated benefits vs diffuse costs**\n\n- Benefit concentration: the primary safety benefit (reduced risk of catastrophic engine failure) accrues to specific aircraft, their crews and passengers, and to airlines/operators who avoid accident costs. The benefit is safety-focused and concrete for affected aircraft types.\n- Cost diffusion: the administrative and operational costs are concentrated on the subset of operators using these particular CF34 engine variants; the broader aviation sector is unaffected.\n\n**Implementation and compliance risk**\n\n- The AD imposes a clear, single obligation (amend the manual to include the FAA CORR inspection requirements). The main implementation risks are short notice, availability of qualified maintenance personnel, and parts/replacement lead times if inspections uncover defects.\n\n(References in the AD: \"Applicability\", \"Requirement\", \"Compliance\" and \"Background\" sections specify the engines covered, the manual amendment required, the 30-day compliance period, and the safety rationale.)"},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cf34-6-amdt-2-life-limited-rotating-engine-parts","history":"/api/acts/ad-cf34-6-amdt-2-life-limited-rotating-engine-parts/history","analysis":"/api/acts/ad-cf34-6-amdt-2-life-limited-rotating-engine-parts/analysis","conflicts":"/api/acts/ad-cf34-6-amdt-2-life-limited-rotating-engine-parts/conflicts","importantCases":"/api/acts/ad-cf34-6-amdt-2-life-limited-rotating-engine-parts/important-cases","documents":"/api/acts/ad-cf34-6-amdt-2-life-limited-rotating-engine-parts/documents"}}