{"id":"F2006B03349","name":"AD/B767/174 - Thrust Reverser Modifications and Operational Checks","slug":"ad-b767-174-thrust-reverser-modifications-and-operational-checks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42786,"registerId":"commonwealth-F2006B03349-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Terminating Action","sectionType":"part","heading":"Terminating Action","content":"# Terminating Action\n\nCompliance with this Directive terminates the actions required by paragraph (a) of FAA AD 91-22-02, amendment 39-8062.\n\nNote 2: FAA AD 94-17-03, amendment 39-8998.refers.\n\nCompliance: For Requirement 1: Prior to the issue of a Certificate of Airworthiness.\n\nFor Requirement 2: Within 3,000 flight hours after accomplishment of Requirement 1, or within 1,000 flight hours after the effective date of this Directive, whichever occurs later.\n\nFor Requirement 3: At intervals not exceeding 3,000 flight hours. This Airworthiness Directive becomes effective on 8 August 2002.","sortOrder":0},{"sectionNumber":"Boeing 767 Series Aeroplanes","sectionType":"part","heading":"Boeing 767 Series Aeroplanes","content":"# Boeing 767 Series Aeroplanes\n\nAD/B767/174 (continued)\n\nBackground: This Directive requires inspections, adjustments, functional checks, the installation of a modification and repetitive operational checks of the thrust reverser gearbox locks and the airmotor. These actions are intended to enhance the level of safety inherent in the original type design of the thrust reverser system to prevent possible discrepancies that exist in the current thrust reverser control system, that could result in an inadvertent deployment of a thrust reverser during flight.\n\n![Signature of Eugene Paul Holzapfel, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 28 June 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 17 July 2002.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive with focused scope on thrust reverser safety modifications for Boeing 767 aircraft. The document maintains its original safety purpose without expansion into unrelated areas."},"complexity_factors":["Short document (approximately 250 words)","Only 3 defined compliance timeframes with clear 'whichever occurs later' conditional logic","Single cross-reference to US FAA directive (AD 91-22-02) with explicit terminating action","No nested definitions or interpretation sections","Straightforward technical requirements targeting specific aircraft system (thrust reverser)","Clear effective date and notification date structure"],"plain_english_summary":"This CASA Airworthiness Directive mandates safety modifications, inspections and recurring operational checks of Boeing 767 thrust reverser systems before issuing Certificates of Airworthiness and on an ongoing basis. It targets operators and maintenance organisations to eliminate a defect that could allow in‑flight reverser deployment and loss of control.\n\nCompliance with this AD also satisfies the corresponding FAA requirement (FAA AD 91‑22‑02)."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"This Directive expressly terminates the actions required by paragraph (a) of FAA AD 91‑22‑02 and replaces those obligations with specified inspections, adjustments, a modification and recurring operational checks for Boeing 767 thrust reverser systems. In that sense it changes the applicable compliance scope from the prior FAA paragraph to the requirements set out in this Directive."},"complexity_factors":["Technical specificity: tasks target thrust reverser gearbox locks and the airmotor (requires skilled maintenance and correct procedures).","Multiple timing conditions: initial compliance tied to Certificate of Airworthiness and staggered flight‑hour deadlines (prior to CoA; within 1,000 or 3,000 flight hours).","Repetitive requirements: recurring operational checks at intervals not exceeding 3,000 flight hours.","Cross‑reference to other directives: explicitly terminates paragraph (a) of FAA AD 91‑22‑02 and refers to FAA AD 94‑17‑03, requiring coordinative compliance reading.","Regulatory enforcement and certification interaction: compliance affects issuance of Certificate of Airworthiness and is enforced by CASA (Delegate).","Document excerpt limitation: the supplied text references Requirements 1–3 without reproducing their full procedures, which complicates immediate operational interpretation."],"plain_english_summary":"This Airworthiness Directive requires Boeing 767 operators to inspect, adjust, functionally check and modify thrust reverser gearbox locks and the airmotor, and to perform recurring operational checks to reduce the risk of inadvertent in‑flight thrust reverser deployment. It applies to aircraft owners/operators, who must complete initial work before a Certificate of Airworthiness and meet specified flight‑hour deadlines and recurring intervals; the Civil Aviation Safety Authority (Delegate) enforces compliance and operators bear the cost and scheduling burden."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-174-thrust-reverser-modifications-and-operational-checks","history":"/api/acts/ad-b767-174-thrust-reverser-modifications-and-operational-checks/history","analysis":"/api/acts/ad-b767-174-thrust-reverser-modifications-and-operational-checks/analysis","conflicts":"/api/acts/ad-b767-174-thrust-reverser-modifications-and-operational-checks/conflicts","importantCases":"/api/acts/ad-b767-174-thrust-reverser-modifications-and-operational-checks/important-cases","documents":"/api/acts/ad-b767-174-thrust-reverser-modifications-and-operational-checks/documents"}}