{"id":"F2006B05378","name":"AD/P68/50 - Flight Control","slug":"ad-p68-50-flight-control","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45966,"registerId":"commonwealth-F2006B05378-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.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.\n\nPartenavia P68 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/P68/50 Flight Control 6/2002 DM","sectionType":"part","heading":"AD/P68/50 Flight Control 6/2002 DM","content":"# AD/P68/50 Flight Control 6/2002 DM\n\nApplicability: All Model P68 Observer 2 aircraft, with serial numbers 401 through 413, and Model P68C aircraft serial number 402.\n\nAll Model P68 aircraft, up to and including serial number 413.\n\nRequirement: Inspect in accordance with VulcanAir Service Bulletin No. 111 Revision 1.\n\nNote: ENAC AD 2002-155 refers.\n\nCompliance: For Part A of Requirement document: Before further flight after 17 April 2002.\n\nFor Part B of Requirement document: Within 15 days or at the next 50 hour inspection after 17 April 2002, whichever occurs first.\n\nThis Airworthiness Directive becomes effective on 17 April 2002.\n\nBackground: The manufacturer received reports of instances of an incorrectly installed forward stabilator connecting rod/control column bolt, and missing nut. In addition, interference was found between the forward control lever assembly and the structure.\n\n![](image.002.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 10 April 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 17 April 2002.","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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing specific mechanical defects in a limited production run of aircraft. No scope creep detected."},"complexity_factors":["Very short document (under 300 words)","Only 4 defined applicability criteria (specific serial numbers)","Simple two-part compliance structure with clear deadlines","Single cross-reference to external service bulletin","No nested conditions or exceptions","Straightforward cause-and-effect: unsafe condition → mandatory inspection"],"plain_english_summary":"This CASA Airworthiness Directive mandates urgent inspections of specified Partenavia P68 series aircraft (certain P68 Observer 2, P68C, and all P68 up to serial 413) after discovery of missing/incorrect stabilator bolts, nuts, and rubbing parts that risk loss of flight control.\n\nIt orders an immediate inspection before further flight and a follow‑up within 15 days or at the next 50‑hour check, using VulcanAir Service Bulletin No. 111 Rev 1."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The AD contains two applicability phrasings: one identifying specific models/serial numbers (P68 Observer 2 serials 401–413 and P68C serial 402) and a subsequent line stating 'All Model P68 aircraft, up to and including serial number 413.' The second phrasing broadens the stated applicability beyond the initially‑listed model subset, changing the scope to include all P68s with serial numbers up to 413."},"complexity_factors":["Multiple applicability statements in the AD (specific model/serials and a broader 'all Model P68 up to and including serial number 413') creating potential ambiguity about exact scope.","Requirement refers to an external document (VulcanAir Service Bulletin No.111 Revision 1) for inspection instructions, so compliance depends on that bulletin's technical detail.","Different compliance deadlines for parts of the Requirement (Part A: before further flight after 17 Apr 2002; Part B: within 15 days or at next 50‑hour inspection), requiring operators to track timing precisely.","The AD is issued under CAR 1998 subregulation 39.1(1), invoking delegated regulatory power and obliging operators to follow the delegate’s corrective action.","Cross‑reference to an overseas authority (ENAC AD 2002‑155) which may require operators to consult multiple sources for context.","Effective date (17 April 2002) and delegated signatory details are included, which matter for enforcement and record‑keeping."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Partenavia P68 aeroplanes (P68 Observer 2 serials 401–413; P68C serial 402 — and a broader line saying all P68 up to serial 413) to inspect the forward stabilator/control‑column linkage following VulcanAir Service Bulletin No.111 Rev 1. It was issued because of reports of an incorrectly installed connecting‑rod/control‑column bolt, a missing nut and interference in the forward control lever assembly; operators must carry out the inspections within the AD’s stated timeframes to keep the aircraft airworthy."}},"importantCases":[],"_links":{"self":"/api/acts/ad-p68-50-flight-control","history":"/api/acts/ad-p68-50-flight-control/history","analysis":"/api/acts/ad-p68-50-flight-control/analysis","conflicts":"/api/acts/ad-p68-50-flight-control/conflicts","importantCases":"/api/acts/ad-p68-50-flight-control/important-cases","documents":"/api/acts/ad-p68-50-flight-control/documents"}}