{"id":"F2006B03449","name":"AD/B767/96 Amdt 2 - Trailing Edge Flaps - Hinge Fitting Assembly Bolts","slug":"ad-b767-96-amdt-2-trailing-edge-flaps-hinge-fitting-assembly-bolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43003,"registerId":"commonwealth-F2006B03449-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/96 Amdt 2 - Trailing Edge Flaps - Hinge Fitting Assembly Bolts","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)  \n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B767/96 Amdt 1 and issues the following 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 767 Series Aeroplanes\n\nAD/B767/96\n\nAmdt 2\n\n  \n\nTrailing Edge Flaps \\- Hinge Fitting Assembly Bolts\n\n  \n9/2003\n\nApplicability: Model 767-200, -300, and -300F series aircraft, line numbers 1 through 710. Requirement: Action in accordance with the technical requirements of FAA AD 2003-09-08 Amdt\n\n39-13137.\n\nNote: Boeing Alert Service Bulletin 767-27A0151 Revision 4 and Service Bulletin 767-27A0155 Revision 2 refer.\n\nCompliance: As specified in the Requirement document, with a revised effective date of 7 August 2003.\n\nThis Amendment becomes effective on 4 September 2003.\n\nBackground: The manufacturer received a report of the separation of a 20-foot section of trailing edge flap, with associated damage to spoilers 9 and 12. Investigation revealed that four bolts attaching the inboard hinge fitting had failed; one bolt had previously fractured due to fatigue, two bolts partially fractured due to fatigue with subsequent overload, and one bolt failed fully in overload.\n\nAmendment 1 introduced revision 2 of the Requirement document, which clarified and alleviated certain requirements.\n\nAmendment 2 is issued in response to a new FAA AD, which reduces the applicability of the existing FAA AD, adds inspections, and mandates terminating action.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 22 July 2003\n\n![](image.001.png)\n\nThe above AD is notified in the Commonwealth of Australia Gazette on 13 August 2003.\n\n  \n\nPage 1 of 1","sortOrder":0}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"The original AD (presumably Amendment 0) was issued to address bolt failures. Amendment 1 'clarified and alleviated certain requirements' (reducing burden). Amendment 2 now expands scope again by adding new inspections and mandatory permanent fixes ('terminating action'), while simultaneously narrowing applicability to fewer aircraft (line numbers 1-710 only, per the new FAA AD). The legislation has evolved from initial safety response → burden reduction → enhanced safety with permanent solutions."},"complexity_factors":["Short document (1 page) with minimal text","Only 2 defined terms implicitly used (AD, CASR)","Single cross-reference to external FAA document (AD 2003-09-08) which contains the actual technical requirements","Simple conditional structure: applicability → requirement → compliance","No nested exceptions or complex logical operators","Adopts technical requirements by reference rather than reproducing them, keeping the legislative instrument itself brief"],"plain_english_summary":"This safety order addresses fractured bolts that can let Boeing 767 wing flaps detach in flight. It revokes the prior amendment and issues an updated mandate for owners/operators of specific 767-200/300/300F airframes (line numbers 1–710), adopting the FAA’s AD 2003-09-08 by reference. Affected operators must follow the referenced inspections and required terminating repairs to prevent bolt failure and potential wing damage."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"Yes. Amendment 2 changes the AD's scope relative to the prior amendment by reducing applicability, adding inspections and mandating a terminating action, and adopting the updated FAA AD as the technical requirement (Background: \"Amendment 2...reduces the applicability of the existing FAA AD, adds inspections, and mandates terminating action\"; Requirement: \"Action in accordance with...FAA AD 2003-09-08\")."},"complexity_factors":["External cross-reference: Requirement delegates technical detail to FAA AD 2003-09-08 rather than reproducing procedures locally (Requirement: \"Action in accordance with the technical requirements of FAA AD 2003-09-08\").","Multiple external service documents referenced (Boeing Alert Service Bulletin 767-27A0151 Rev 4 and Service Bulletin 767-27A0155 Rev 2) creating dependency on non‑legislative materials (Note).","Narrowed applicability by airframe line numbers (Applicability: \"line numbers 1 through 710\") increases administrative tracking complexity for operators and regulators.","Amendment history: revocation of AD/B767/96 Amdt 1 and issuance of Amdt 2 with prior clarifications/relaxations complicates compliance history and recordkeeping (Background: \"revokes...Amdt 1\").","Addition of inspections and a mandated terminating action introduces differing compliance burdens (inspection frequency/cost versus a one‑time terminating modification) (Amendment 2: \"adds inspections, and mandates terminating action\").","Revised effective and compliance dates (Compliance: \"revised effective date of 7 August 2003\"; \"This Amendment becomes effective on 4 September 2003\") require operators to reconcile multiple dates.","Technical cause is fatigue fracture of hinge bolts leading to structural separation, so inspection standards and replacement/repair specifications are technical and safety‑critical (Background: description of bolt failures).","Regulatory discretion is limited: CASA issues the AD but relies on FAA technical requirements and Boeing service bulletins, concentrating procedural authority in external technical documents (Requirement/Note)."],"plain_english_summary":"Requires owners/operators of Boeing 767-200, -300 and -300F (line numbers 1–710) to carry out the technical actions specified in FAA AD 2003-09-08: additional inspections and a mandated terminating action for trailing-edge flap hinge fitting bolts. Issued after a reported 20‑foot flap separation caused by bolt fatigue; Amendment 2 narrows applicability, adds inspections and sets revised compliance dates."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-96-amdt-2-trailing-edge-flaps-hinge-fitting-assembly-bolts","history":"/api/acts/ad-b767-96-amdt-2-trailing-edge-flaps-hinge-fitting-assembly-bolts/history","analysis":"/api/acts/ad-b767-96-amdt-2-trailing-edge-flaps-hinge-fitting-assembly-bolts/analysis","conflicts":"/api/acts/ad-b767-96-amdt-2-trailing-edge-flaps-hinge-fitting-assembly-bolts/conflicts","importantCases":"/api/acts/ad-b767-96-amdt-2-trailing-edge-flaps-hinge-fitting-assembly-bolts/important-cases","documents":"/api/acts/ad-b767-96-amdt-2-trailing-edge-flaps-hinge-fitting-assembly-bolts/documents"}}