{"id":"F2006B03297","name":"AD/B767/116 - Engine Primary Thrust Linkage","slug":"ad-b767-116-engine-primary-thrust-linkage","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42734,"registerId":"commonwealth-F2006B03297-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.002.png)\n\n![](image.002.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.","sortOrder":0},{"sectionNumber":"AD/B767/116 Engine Primary Thrust Linkag","sectionType":"part","heading":"AD/B767/116 Engine Primary Thrust Linkage 4/2000","content":"# AD/B767/116 Engine Primary Thrust Linkage 4/2000\n\nApplicability: Model 767 series aircraft, powered by Pratt & Whitney Model JT9D or Model PW 4000 series engines, as listed in Boeing Alert Service Bulletin 767-71A0087, dated 10 October 1996.\n\nRequirement: Action in accordance with the technical requirements of FAA AD 99-26-09 Amdt 39- 11468 refers.\n\nCompliance: As specified in the requirement document for the initial and repetitive inspections, with a revised effective date of 20 April 2000.\n\nThis Airworthiness Directive becomes effective on 20 April 2000.\n\nBackground: The FAA received a report of fatigue cracking of the engine thrust linkage end cap bolts, caused by improper installation. This condition could lead to separation of the engine from the aircraft in the event of a primary thrust linkage failure.\n\n![Signature of Bernard Malcolm Hole, Delegate of the Civil Aviation Safety Authority.](image.003.png)  \n\nBernard Malcolm Hole\n\nDelegate of the Civil Aviation Safety Authority 9 March 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 22 March 2000.","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":"This AD adopts and enforces the FAA AD's technical requirements for the same unsafe condition on the listed Boeing 767/engine combinations and sets a revised effective date (20 April 2000). It does not expand or narrow the applicability beyond the aircraft and engines listed in the Boeing service bulletin and the FAA AD referenced in the requirement."},"complexity_factors":["Direct cross-reference to FAA AD 99-26-09 and Boeing Alert Service Bulletin 767-71A0087 requires implementers to obtain and follow external technical documents","Requires technical inspections and repetitive follow-up work that demand qualified maintenance personnel and access to maintenance records","Applicability is narrow (specific Model 767 series with JT9D or PW4000 engines), which simplifies scope but concentrates obligations on particular operators","Compliance timing is governed by the external requirement document and the AD's revised effective date (20 April 2000), creating an administrative deadline","Issued under CAR 1998 subregulation 39.1(1) — enforcement and any discretionary detail is exercised by the CASA delegate referenced in the AD"],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 767 aircraft fitted with Pratt & Whitney JT9D or PW4000 engines to carry out initial and repetitive inspections and any corrective action on the engine primary thrust linkage, following the technical requirements of FAA AD 99-26-09 and Boeing Alert Service Bulletin 767-71A0087. It takes effect 20 April 2000. The AD responds to reported fatigue cracking of thrust-linkage end-cap bolts caused by improper installation; operators are responsible for performing and paying for the inspections and repairs per the requirement document."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with focused, narrow scope addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original safety purpose."},"complexity_factors":["Short document (approximately 250 words) with straightforward structure","Only 2 defined technical references (FAA AD 99-26-09 and Boeing Service Bulletin 767-71A0087)","Single applicability condition (specific aircraft model and engine combination)","Requirement section delegates entirely to external technical document ('Action in accordance with... refers')","No nested exceptions or conditional logic within the directive itself","Compliance timing references external document rather than specifying dates internally"],"plain_english_summary":"This safety order requires operators of Boeing 767s with Pratt & Whitney JT9D or PW4000 engines to perform mandated inspections and repairs to the engine thrust‑linkage bolts, following FAA AD 99‑26‑09 and Boeing Alert SB 767‑71A0087, within set deadlines.  \n\nIt responds to fatigue cracking from improper bolt installation that could lead to engine separation in flight, forcing prompt inspection and corrective action to prevent a catastrophic failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-116-engine-primary-thrust-linkage","history":"/api/acts/ad-b767-116-engine-primary-thrust-linkage/history","analysis":"/api/acts/ad-b767-116-engine-primary-thrust-linkage/analysis","conflicts":"/api/acts/ad-b767-116-engine-primary-thrust-linkage/conflicts","importantCases":"/api/acts/ad-b767-116-engine-primary-thrust-linkage/important-cases","documents":"/api/acts/ad-b767-116-engine-primary-thrust-linkage/documents"}}