{"id":"F2006B08524","name":"AD/CFM56/20 - Rotating Engine Components - Additional Inspection","slug":"ad-cfm56-20-rotating-engine-components-additional-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51273,"registerId":"commonwealth-F2006B08524-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CFM56/20 - Rotating Engine Components - Additional Inspection","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 issues the following Airworthiness Directive (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\nCFM International Turbine Engines \\- CFM56 Series\n\nAD/CFM56/20 Rotating Engine Components \\- Additional\n\nInspection\n\n  \n9/2002\n\nApplicability: CFM International (CFMI) CFM56 Series engines as listed in the requirement document.\n\nRequirement: Amend the Airworthiness Limitations Sections of the Engine Shop Manuals to include the mandatory inspections per the FAA AD 2002-13-03.\n\nNote: FAA AD 2002-13-03, Amdt 39-12790 refers which supersedes FAA AD 2000- 12-01. This Directive supersedes AD/CFM56/17.\n\nCompliance: Within 30 days after the effective date of this AD.\n\nThis Airworthiness Directive becomes effective on 5 September 2002.\n\nBackground: This directive is prompted by an FAA study of in-service events involving uncontained failures of critical rotating parts. The actions specified by this AD are intended to prevent critical life- limited rotating engine part failure, which could result in an uncontained engine failure and damage to the aeroplane.\n\n![Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 26 July 2002\n\n![](image.001.png)\n\nThe above AD is notified in the Commonwealth of Australia Gazette on 14 August 2002.\n\n  \n\nPage 1 of 1","sortOrder":0}],"analysis":{"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This Directive replaces the earlier AD/CFM56/17 by adding and formalising mandatory inspections from FAA AD 2002-13-03 into the Engine Shop Manuals for the listed CFM56 engines. That expands and specifies inspection obligations and timing for life-limited rotating parts compared with the prior AD, thereby changing the practical inspection scope operators must implement."},"complexity_factors":["Cross-reference to FAA AD 2002-13-03 — compliance depends on an external (foreign) airworthiness directive.","Mandated amendment of Engine Shop Manual Airworthiness Limitations Sections — administrative integration into maintenance manuals.","Applicability tied to engines “as listed in the requirement document” — requires checking an external parts/applicability list.","Short compliance timeframe (30 days) — rapid operational and record-keeping changes required.","Supersedes prior AD (AD/CFM56/17) and references earlier FAA ADs — regulatory history affects interpretation and transition.","Technical inspections concern life-limited rotating components — requires specialist maintenance capability and possible downtime.","Decision issued by a CASA delegate under CAR 1998 subreg 39.1(1) — delegated regulatory discretion governs enforcement."],"plain_english_summary":"Mechanically, this Directive requires operators and maintainers of specified CFM56 engines to amend their Engine Shop Manuals’ Airworthiness Limitations Sections and perform the mandatory inspections set out in FAA AD 2002-13-03, with compliance within 30 days (effective 5 September 2002). It applies to airlines, maintenance organisations and engine owners, who bear the cost and operational burden of adding and carrying out those inspections. The CASA delegate issued the requirement under CAR 1998 subreg 39.1(1) to reduce the risk of uncontained failures of life-limited rotating engine parts."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive adopting an FAA safety order. It maintains its original narrow purpose: mandating specific engine inspections. No scope creep is evident."},"complexity_factors":["Very short document (1 page)","No defined terms section — relies entirely on external FAA document for technical specifications","Simple structure: applicability, requirement, compliance, background","Single cross-reference to external FAA directive (AD 2002-13-03) which contains the actual inspection details","No nested conditions or exceptions","Clear, fixed compliance deadline (30 days)"],"plain_english_summary":"This CASA safety order makes mandatory extra inspections of rotating parts in CFM56 engines (used on Boeing 737/A320 families), requiring airlines and maintenance/overhaul organisations to check turbine and compressor components within 30 days. Triggered by FAA findings of in-service part failures that can cause uncontained engine events, it adopts FAA AD 2002‑13‑03 and enforces it under Australian law."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cfm56-20-rotating-engine-components-additional-inspection","history":"/api/acts/ad-cfm56-20-rotating-engine-components-additional-inspection/history","analysis":"/api/acts/ad-cfm56-20-rotating-engine-components-additional-inspection/analysis","conflicts":"/api/acts/ad-cfm56-20-rotating-engine-components-additional-inspection/conflicts","importantCases":"/api/acts/ad-cfm56-20-rotating-engine-components-additional-inspection/important-cases","documents":"/api/acts/ad-cfm56-20-rotating-engine-components-additional-inspection/documents"}}