{"id":"F2006B03371","name":"AD/B767/195 - Main Landing Gear Outer Cylinder","slug":"ad-b767-195-main-landing-gear-outer-cylinder","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42834,"registerId":"commonwealth-F2006B03371-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 767 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/B767/195 Main Landing Gear Outer Cyli","sectionType":"part","heading":"AD/B767/195 Main Landing Gear Outer Cylinder 7/2004","content":"# AD/B767/195 Main Landing Gear Outer Cylinder 7/2004\n\nApplicability: Model 767-200, -300, and -300F series aircraft, line numbers 1 through 883. Requirement: Action in accordance with the technical requirements of FAA AD 2004-09-11 Amdt\n\n39-13600.\n\nNote: Boeing Service Bulletins 767-32A0196 original issue, Revision 1, and Revision 2 refer.\n\nCompliance: As specified in the Requirement document, with a revised effective date of 8 July 2004.\n\nThis Airworthiness Directive becomes effective on 8 July 2004.\n\nBackground: This Directive requires measurements of the main landing gear outer cylinder upper and lower joint gaps, and an ultrasonic inspection of the outer cylinder for cracks between the downlock fitting attach lugs. This action is required to detect and correct cracks in the outer cylinder of the main landing gear, which could result in landing gear collapse and consequent reduced controllability of the aircraft during takeoff and landing.\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 26 May 2004\n\n![](image.001.png)","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":3,"scope_assessment":{"changed":false,"description":"No change of substantive scope is indicated in the instrument text: it adopts the FAA AD technical requirements for specified Boeing 767 models/line numbers and mandates inspections and measurements with a revised effective date of 8 July 2004 (Applicability; Requirement; Compliance; Background)."},"complexity_factors":["External-reference dependency: the AD requires compliance with FAA AD 2004-09-11 and Boeing Service Bulletins (Requirement; Note) which creates reliance on external documents for technical detail.","Technical inspection tasks: measurements of joint gaps and ultrasonic crack inspections require specialist equipment and trained maintenance personnel (Background; Requirement).","Applicability tracking: applies only to Model 767-200, -300, -300F and line numbers 1–883, so operators must track serial/line-number applicability across their fleets (Applicability).","Timing and recordkeeping: compliance is tied to the referenced Requirement document with a revised effective date (Compliance), obliging operators to schedule actions and retain evidence of compliance.","Regulatory authority and formality: issued under CASR subregulation 39.1(1) and signed by a CASA delegate, establishing a formal mandatory directive with limited scope for discretionary deviation (preamble and signature)."],"plain_english_summary":"**Required action:** Measures the Boeing 767 main landing gear outer cylinder upper and lower joint gaps and performs an ultrasonic inspection for cracks on Model 767-200, -300 and -300F aircraft (line numbers 1–883). Operators and maintenance organisations must carry out these actions in accordance with FAA AD 2004-09-11 and referenced Boeing service bulletins by the revised effective date 8 July 2004. The inspections are intended to detect and repair cracks that could otherwise cause landing gear collapse and reduced aircraft controllability."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with a narrow, specific safety purpose: addressing a known defect in a particular aircraft component. It has not expanded beyond its original intent of ensuring landing gear integrity on affected Boeing 767 models."},"complexity_factors":["Very short document (approximately 250 words)","Only 3 defined/model references (767-200, -300, -300F series, line numbers 1-883)","Single requirement that cross-references an external FAA document rather than setting out detailed technical instructions internally","No nested exceptions or conditional logic - straightforward applicability and compliance structure","Minimal legislative cross-referencing (only mentions CASR 1998 subregulation 39.1(1) as enabling power)"],"plain_english_summary":"This CASA safety order requires inspections of the Boeing 767 main landing gear outer cylinder for dangerous cracks, adopting and enforcing the FAA’s AD 2004‑09‑11. It affects airlines, operators, owners and maintenance engineers of 767‑200/300/300F aircraft (line numbers 1–883) in Australia to prevent landing‑gear collapse and potential catastrophic accidents. The directive took effect 8 July 2004 with compliance timelines per the FAA AD."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-195-main-landing-gear-outer-cylinder","history":"/api/acts/ad-b767-195-main-landing-gear-outer-cylinder/history","analysis":"/api/acts/ad-b767-195-main-landing-gear-outer-cylinder/analysis","conflicts":"/api/acts/ad-b767-195-main-landing-gear-outer-cylinder/conflicts","importantCases":"/api/acts/ad-b767-195-main-landing-gear-outer-cylinder/important-cases","documents":"/api/acts/ad-b767-195-main-landing-gear-outer-cylinder/documents"}}