{"id":"F2006B02909","name":"AD/B737/212 - Landing Gear Parts/Records","slug":"ad-b737-212-landing-gear-parts-records","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42251,"registerId":"commonwealth-F2006B02909-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\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 CASR 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\n![](image.001.png)  \n\nBoeing 737 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/B737/212 Landing Gear Parts/Records 7","sectionType":"part","heading":"AD/B737/212 Landing Gear Parts/Records 7/2003","content":"# AD/B737/212 Landing Gear Parts/Records 7/2003\n\nApplicability: Model 737-100, \\-200, \\-200C, \\-300, \\-400, and \\-500 series aircraft, line numbers 1\n\nthrough 3132.\n\nRequirement: Action in accordance with the technical requirements of FAA AD 2003-07-12 Amdt 39-13108.\n\nNote: Boeing Service Bulletin 737-32-1322 Revision 1 refers.\n\nCompliance: As specified in the Requirement document, with a revised effective date of 10 July 2003.\n\nThis Airworthiness Directive becomes effective on 10 July 2003.\n\nBackground: This Directive requires inspection of landing gear parts and their records to see that parts have serial numbers and that each part’s number of flight cycles has been tracked. It also requires assignment of serial numbers and flight cycle use numbers (if necessary), removal of individual landing gear components from service when they reach their life limit, and adds landing gear parts to the lists of safe-life components, and assigns life limits to landing gear parts already in service.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.jpeg)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 23 May 2003\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 18 June 2003.","sortOrder":1}],"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":4,"scope_assessment":{"changed":false,"description":"The AD adopts and requires the technical actions of FAA AD 2003-07-12 for the listed Boeing 737 models and line numbers 1–3132 (see Applicability and Requirement). It does not, on its face, expand beyond those external requirements but makes them mandatory in Australia and references Boeing Service Bulletin 737-32-1322 Revision 1 (Note)."},"complexity_factors":["Normative reference to an external FAA AD (FAA AD 2003-07-12 Amdt 39-13108) — compliance requires obtaining and following another jurisdiction's document.","Cross-reference to Boeing Service Bulletin 737-32-1322 Revision 1 creates dependence on manufacturer instructions (Note).","Record-keeping and traceability requirement: assigning serial numbers and tracking flight-cycle counts for already-in-service parts.","Retroactive/after-the-fact tasks: assigning identifiers and flight-cycle counts to parts without existing records increases administrative burden.","Operational impact: removal of parts upon reaching life limits requires planning for part replacement and possible grounding/maintenance scheduling.","Applicability limit by aircraft model and line numbers (1–3132) requires fleet-level filtering and verification.","Compliance timing: revised effective date (10 July 2003) and requirement to act “as specified in the Requirement document” necessitates careful calendar management.","Enforcement basis under CASR subregulation 39.1(1) (instrument issued by CASA delegate) creates statutory compliance obligations for Australian operators."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 737-100, -200, -200C, -300, -400 and -500 (line numbers 1–3132) to inspect landing-gear parts and maintenance records, ensure parts have serial numbers and tracked flight-cycle counts, assign missing identifiers, remove components when they reach life limits, and add those parts to safe-life lists by complying with FAA AD 2003-07-12. It affects aircraft owners, operators and maintenance organisations who must carry out inspections, update records and replace parts; the goal stated is to reduce the risk of in-service failures by enforcing traceability and life limits."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope. It addresses a specific unsafe condition regarding landing gear part tracking and life limits for Classic 737 series aircraft. There is no evidence of scope creep; the directive precisely targets the identified safety issue without expanding into unrelated operational or maintenance areas."},"complexity_factors":["Very short document (under 400 words)","Only 4 defined structural sections (Applicability, Requirement, Compliance, Background)","Single cross-reference to FAA AD 2003-07-12 Amdt 39-13108 (delegates technical details to external US regulation)","Single note referencing Boeing Service Bulletin 737-32-1322 Revision 1","No nested exceptions or conditional logic — straightforward mandatory action","Clear, fixed compliance date (10 July 2003)"],"plain_english_summary":"Safety order for Boeing 737 Classic aircraft requiring operators to serialise, inspect, and track landing-gear components by flight cycles, retire parts at their life limits, and add them to the safe-life component list. \n\nApplies to owners/operators of 737-100, -200, -200C, -300, -400, and -500 (line numbers 1–3132). It closes a tracking gap so overused, untracked gear is removed before it can cause catastrophic failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-212-landing-gear-parts-records","history":"/api/acts/ad-b737-212-landing-gear-parts-records/history","analysis":"/api/acts/ad-b737-212-landing-gear-parts-records/analysis","conflicts":"/api/acts/ad-b737-212-landing-gear-parts-records/conflicts","importantCases":"/api/acts/ad-b737-212-landing-gear-parts-records/important-cases","documents":"/api/acts/ad-b737-212-landing-gear-parts-records/documents"}}