{"id":"F2006B02886","name":"AD/B737/184 - Fuselage Lap Joint Repairs","slug":"ad-b737-184-fuselage-lap-joint-repairs","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42228,"registerId":"commonwealth-F2006B02886-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\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\nBoeing 737 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/B737/184 Fuselage Lap Joint Repairs 7","sectionType":"part","heading":"AD/B737/184 Fuselage Lap Joint Repairs 7/2002","content":"# AD/B737/184 Fuselage Lap Joint Repairs 7/2002\n\nApplicability: Model 737-200, \\-200C, \\-300, \\-400, and \\-500 series aircraft, line numbers 292 through\n\n2565.\n\nRequirement: Action in accordance with the technical requirements of FAA AD 2002-07-10 Amdt 39-12704.\n\nNote: Boeing Service Bulletin 737-53A1177 Revision 6 refers.\n\nCompliance: As specified in the Requirement document.\n\nThis Airworthiness Directive becomes effective on 11 July 2002.\n\nBackground: The FAA requires actions which include replacement of certain repairs in certain fuselage lap joints with improved repairs, and a high frequency eddy current inspection to find cracking of the repairs of the lower skin at the lower row of fasteners in the lap joints of the fuselage. Premature cracking of certain lap joint repairs could result in rapid decompression of the aircraft.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 30 May 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 19 June 2002.","sortOrder":1}],"analysis":{"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"},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The AD adopts the FAA AD’s technical requirements for the specified Boeing 737 variants and line numbers; the text does not indicate any expansion, narrowing or other change to the FAA’s scope. The instrument simply mandates compliance with FAA AD 2002-07-10 and refers to Boeing Service Bulletin 737-53A1177 Revision 6, effective 11 July 2002."},"complexity_factors":["Cross-reference to an external instrument: requires compliance “in accordance with the technical requirements of FAA AD 2002-07-10 Amdt 39-12704” (Requirement).","Reference to manufacturer service information: Note states Boeing Service Bulletin 737-53A1177 Revision 6 refers (Note).","Technical inspection method specified: mandates high‑frequency eddy current (HFEC) inspection to detect cracking (Background).","Targeted repair work: replacement of certain lap‑joint repairs with ‘improved repairs’ involves material/structural repair procedures and parts procurement (Background & Requirement).","Narrow applicability by model and line numbers: Model 737-200/200C/300/400/500, line numbers 292 through 2565 (Applicability) — requires operators to check fleet serial/line status.","Compliance timing and procedures are set by the referenced FAA AD rather than spelled out in this AD (Compliance/Requirement), adding a layer of cross‑document navigation.","Regulatory basis and delegated decision: issued under subregulation 39.1(1) of CAR 1998 by CASA delegate (preamble/signature), showing administrative delegation.","Effective date and gazettal formalities: effective 11 July 2002 and notified in the Commonwealth Gazette 19 June 2002 (Compliance/administration)."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 737-200/200C/300/400/500 (line numbers 292–2565) to carry out the technical actions set out in FAA AD 2002-07-10, including replacing certain fuselage lap‑joint repairs and performing high‑frequency eddy‑current inspections. It takes effect 11 July 2002. The directive addresses premature cracking in specified lap‑joint repairs that could lead to rapid decompression; operators and maintenance organisations must do the inspections and repairs and follow the FAA/Boeing instructions, which creates direct compliance cost and operational maintenance effects."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard adoption of a foreign airworthiness directive. The scope remains tightly focused on the specific safety issue (fuselage lap joint repairs on specific Boeing 737 models) and has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 2 substantive operative sections (Applicability and Requirement)","Minimal defined terms (only standard aviation terminology like 'line numbers')","No nested conditional logic or exceptions","Single cross-reference to an external FAA directive (AD 2002-07-10) and Boeing Service Bulletin","Compliance timing simply defers to the referenced FAA document"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners/operators of certain Boeing 737-200/-300/-400/-500 series to replace specified lap‑joint repairs and perform high‑frequency eddy‑current inspections. It responds to premature cracking in fuselage lap joints that could lead to sudden cabin decompression. The order affects airlines and maintenance organisations in Australia and aligns local rules with the FAA’s safety actions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-184-fuselage-lap-joint-repairs","history":"/api/acts/ad-b737-184-fuselage-lap-joint-repairs/history","analysis":"/api/acts/ad-b737-184-fuselage-lap-joint-repairs/analysis","conflicts":"/api/acts/ad-b737-184-fuselage-lap-joint-repairs/conflicts","importantCases":"/api/acts/ad-b737-184-fuselage-lap-joint-repairs/important-cases","documents":"/api/acts/ad-b737-184-fuselage-lap-joint-repairs/documents"}}