{"id":"F2006B02904","name":"AD/B737/207 - Fuel Hose Coupling - Inspection","slug":"ad-b737-207-fuel-hose-coupling-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42246,"registerId":"commonwealth-F2006B02904-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/B737/207 Fuel Hose Coupling - Inspect","sectionType":"part","heading":"AD/B737/207 Fuel Hose Coupling - Inspection 3/2003","content":"# AD/B737/207 Fuel Hose Coupling \\- Inspection 3/2003\n\nApplicability: Model 737-600, \\-700, \\-800 series aeroplanes listed in Group I or II of Boeing Alert Service Bulletin 737-73A1011 Revision 2 dated July 13 2000, certified in any category.\n\nRequirement: Action per the requirements, including initial inspection and repetitive inspections, of FAA AD 2002-14-21 Amdt 39-12821.\n\nNote 1: This Directive supersedes AD/B737/179 Amdt 1 which was based on FAA AD 99-03-08.\n\nNote 2: FAA AD 2002-14-21 supersedes FAA AD 99-03-08.\n\nCompliance: As detailed in the Requirement document with a revised effective date of 20 March 2003.\n\nThis Airworthiness Directive becomes effective on 20 March 2003.\n\nBackground: This Directive mandates an inspection and corrective action plan to prevent fuel leak due to chafing of a fuel hose coupling on the engine fan case firewall.\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 30 January 2003\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 26 February 2003.","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"This Directive supersedes AD/B737/179 Amdt 1 and adopts the requirements of FAA AD 2002-14-21 (Notes 1–2). That updates the previous FAA-based requirement (FAA AD 99-03-08) and aligns applicability and inspection/repair obligations with the newer FAA AD and the Boeing service bulletin, with a revised effective date of 20 March 2003."},"complexity_factors":["Incorporation by reference of FAA AD 2002-14-21 (external regulatory document) rather than prescribing standalone procedures","Applicability tied to aircraft listed in Groups I or II of Boeing Alert Service Bulletin 737-73A1011 Revision 2 (cross-reference to a manufacturer service bulletin)","Requirement includes both initial and repetitive inspections plus corrective actions (ongoing compliance burden)","Supersession of an earlier AD (AD/B737/179 Amdt 1) requiring readers to compare versions to see what changed","Compliance timing set by the Requirement document with a revised effective date (administrative coordination and scheduling)","Decision authority vested in a CASA delegate under CAR 1998 subregulation 39.1(1) (administrative discretion in issuing ADs)"],"plain_english_summary":"This Airworthiness Directive requires operators of certain Boeing 737-600/700/800 aeroplanes to perform initial and repeated inspections and any corrective action on a fuel hose coupling at the engine fan case firewall, by following the procedures in FAA AD 2002-14-21 and the referenced Boeing service bulletin. The CASA delegate issues the requirement; aircraft operators must arrange and pay for the inspections and repairs. The stated aim is to prevent fuel leaks from chafing; the directive changes operator behaviour by imposing mandated inspection intervals and corrective work, effective 20 March 2003."},"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific mechanical defect (fuel hose chafing) on specific Boeing 737 variants. The replacement of an earlier AD (AD/B737/179) with this updated version reflects normal regulatory evolution based on new technical information from the manufacturer and FAA, not scope creep."},"complexity_factors":["Short document (under 500 words)","Only 3 defined applicability criteria (aircraft model, service bulletin reference, certification category)","Single requirement that cross-references an external FAA directive rather than spelling out procedures in full","No nested exceptions or conditional logic — straightforward mandate with clear replacement of prior directive","Background section provides plain-language explanation of safety risk"],"plain_english_summary":"This AD requires operators of certain Boeing 737-600/-700/-800 series to perform initial and recurring inspections of fuel hose-to-coupling installations, following FAA AD 2002-14-21 procedures. It addresses chafing that can cause fuel leaks and fire risk near the engine fan case firewall, supersedes the earlier AD/B737/179, and took effect 20 March 2003."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-207-fuel-hose-coupling-inspection","history":"/api/acts/ad-b737-207-fuel-hose-coupling-inspection/history","analysis":"/api/acts/ad-b737-207-fuel-hose-coupling-inspection/analysis","conflicts":"/api/acts/ad-b737-207-fuel-hose-coupling-inspection/conflicts","importantCases":"/api/acts/ad-b737-207-fuel-hose-coupling-inspection/important-cases","documents":"/api/acts/ad-b737-207-fuel-hose-coupling-inspection/documents"}}