{"id":"F2006B09717","name":"AD/F27/150 - Flight Crew Seat Shoulder Harness","slug":"ad-f27-150-flight-crew-seat-shoulder-harness","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115895,"registerId":"commonwealth-F2006B09717-current","compilationNumber":null,"startDate":"2026-04-03","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 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/F27/150 Flight Crew Seat Shoulder Har","sectionType":"part","heading":"AD/F27/150 Flight Crew Seat Shoulder Harness 3/2000","content":"# AD/F27/150 Flight Crew Seat Shoulder Harness 3/2000\n\nApplicability: All aircraft equipped with Pacific Scientific Model 0108900 series flight crew shoulder harness assemblies.\n\nRequirement: Perform a one-time inspection and functional check of the shoulder harness in accordance with Fokker Services’ SB F27/25-65.\n\nNote: RLD AD 1999-139 dated 29 October 1999 refers.\n\nCompliance: Before 23 September 2000.\n\nThis Airworthiness Directive becomes effective on 23 March 2000.\n\nBackground: There is an overseas report that a pilot’s shoulder harness pulled out of the inertia reel completely due to an incorrectly attached reel mechanism.\n\n![Signature of Eugene Paul Holzapfel, Delegate of the Civil Aviation Safety Authority.](image.003.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 15 February 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 23 February 2000.","sortOrder":1}],"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":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific mechanical defect in a specific shoulder harness model. There is no evidence of scope creep; it remains a targeted safety response to a single reported incident."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined term implicitly used (applicability refers to specific model number)","Single, unambiguous requirement with no conditional branches or exceptions","No cross-references to other legislation (only references a manufacturer's service bulletin and a related Dutch AD for context)","Clear, fixed compliance date with no alternative methods or phased implementation","Straightforward factual background with single causal chain"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires operators of Fokker aircraft fitted with Pacific Scientific Model 0108900-series pilot shoulder harnesses to perform a one-time visual inspection and functional test of the inertia reel, using Fokker Services Service Bulletin F27/25-65. \n\nIt responds to an overseas incident where the reel detached, risking pilot injury or loss of control; compliance was required before 23 September 2000 (effective 23 March 2000)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD's mandated action (one-time inspection and functional check per the Fokker service bulletin) directly addresses the stated unsafe condition (a harness pulling out of the inertia reel due to incorrect reel attachment). The instrument does not expand applicability beyond the specified harness model or add unrelated requirements, so no change in scope from the AD's stated purpose is evident (Requirement; Background; Applicability)."},"complexity_factors":["Narrow technical applicability: only Pacific Scientific Model 0108900 series shoulder harness assemblies are covered (Applicability).","Single mandated action: one-time inspection and functional check rather than recurring maintenance (Requirement).","Dependency on an external technical document: compliance requires following Fokker Services’ SB F27/25-65 (Requirement).","Fixed compliance deadline creates scheduling pressure for operators: compliance required before 23 September 2000 (Compliance).","Clear legal basis and issuer: issued under subregulation 39.1(1) of CAR 1998 by CASA delegate (header/signature).","Operational burden rests with aircraft operators/maintenance organisations who must perform and fund the inspection (implicit in Requirement and Compliance).","Safety trigger is a single overseas report of failure due to incorrect reel attachment, which narrows the causal focus of the remedy (Background)."],"plain_english_summary":"This AD requires a one-time inspection and functional check of Pacific Scientific Model 0108900 series flight crew shoulder harnesses per Fokker Services’ SB F27/25-65. It applies to aircraft fitted with that assembly and must be completed by 23 September 2000.\n\nCASA issued the AD under CAR 1998 s39.1(1); aircraft operators and maintenance organisations must carry out and pay for the inspection. The AD followed a report that a harness pulled completely out of its inertia reel because the reel mechanism was incorrectly attached."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f27-150-flight-crew-seat-shoulder-harness","history":"/api/acts/ad-f27-150-flight-crew-seat-shoulder-harness/history","analysis":"/api/acts/ad-f27-150-flight-crew-seat-shoulder-harness/analysis","conflicts":"/api/acts/ad-f27-150-flight-crew-seat-shoulder-harness/conflicts","importantCases":"/api/acts/ad-f27-150-flight-crew-seat-shoulder-harness/important-cases","documents":"/api/acts/ad-f27-150-flight-crew-seat-shoulder-harness/documents"}}