{"id":"F2006B06366","name":"AD/PT6A/30 - Propeller Governor Assembly","slug":"ad-pt6a-30-propeller-governor-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47614,"registerId":"commonwealth-F2006B06366-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\nPratt and Whitney Canada Turbine Engines \\- PT6A Series","sortOrder":0},{"sectionNumber":"AD/PT6A/30 Propeller Governor Assembly 4","sectionType":"part","heading":"AD/PT6A/30 Propeller Governor Assembly 4/2002","content":"# AD/PT6A/30 Propeller Governor Assembly 4/2002\n\nApplicability: All Pratt and Whitney Canada PT6A-60A and PT6A-65B engines fitted with propeller governor assemblies P/N 8210-212H.\n\nRequirement: Replace applicable governor assemblies Woodward P/N 8210-212H with Woodward P/N 8210-310 in accordance with P&WC SB 13354.\n\nNote 1: Canadian AD CF-2002-02 refers.\n\nNote 2: Applicable governor assemblies can be reworked in accordance with Woodward Service Bulletin 83053-61-006.\n\nCompliance: Within 6 months after the effective date of this Directive.\n\nThis Airworthiness Directive becomes effective on 18 April 2002.\n\nBackground: There have been incidents of asymmetric thrust during landing on aircraft fitted with PT6A-60A engines. Asymmetric thrust on landing poses a safety hazard to personnel and/or equipment. Investigation showed that the asymmetric thrust was caused by one of the two propeller governors not moving to the ground idle pitch setting.\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 8 March 2002\n\n![](image.001.png)","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, targeted airworthiness directive addressing a specific mechanical defect in specific engine models. The scope remains precisely limited to the identified unsafe condition and affected parts."},"complexity_factors":["Very short document (approximately 250 words)","Only 2 defined part numbers requiring replacement","Single compliance pathway with one alternative (rework option)","No nested exceptions or conditional logic","Clear, unambiguous applicability section","Single deadline with no phased compliance options","Minimal cross-referencing (only 2 service bulletins and 1 related Canadian AD mentioned in notes)"],"plain_english_summary":"This AD orders replacement of a faulty Woodward propeller governor (P/N 8210-212H) with an improved unit to prevent it sticking during landing and causing asymmetric thrust. It applies to operators of aircraft with PT6A-60A or PT6A-65B engines fitted with that governor.\n\nCompliance (per the manufacturer’s procedures) was required within six months of 18 April 2002 to eliminate the loss-of-control risk on landing."},"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive limits its scope to PT6A-60A and PT6A-65B engines fitted with Woodward P/N 8210-212H and prescribes replacement or authorised rework within six months (Applicability; Requirement; Compliance). It implements the corrective action identified in the Background and references Canadian AD CF-2002-02 (Note 1), without expanding applicability beyond the parts and engines named."},"complexity_factors":["Narrow technical applicability — targets specific engines and a single governor part number (Applicability).","Technical remedy with an alternative rework path — replacement mandated or rework allowed per Woodward SB 83053-61-006 (Requirement; Note 2).","Reference to manufacturer service information — compliance requires following P&WC Service Bulletin 13354 (Requirement).","Cross-jurisdictional alignment — notes and references to Canadian AD CF-2002-02 (Note 1).","Fixed, short compliance period — action required within six months (Compliance).","Regulatory authority and discretion clearly stated — issued by CASA delegate under CAR 1998 subregulation 39.1(1) (opening paragraph)."],"plain_english_summary":"This Airworthiness Directive requires operators of Pratt & Whitney PT6A-60A and PT6A-65B engines fitted with Woodward propeller governor assembly P/N 8210-212H to replace them with P/N 8210-310 or have them reworked, within six months (Applicability; Requirement; Compliance; Note 2). CASA’s delegate issued the AD under CAR 1998 subregulation 39.1(1) after incidents of asymmetric thrust on landing were traced to a governor failing to move to the ground idle pitch (opening paragraph; Background)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pt6a-30-propeller-governor-assembly","history":"/api/acts/ad-pt6a-30-propeller-governor-assembly/history","analysis":"/api/acts/ad-pt6a-30-propeller-governor-assembly/analysis","conflicts":"/api/acts/ad-pt6a-30-propeller-governor-assembly/conflicts","importantCases":"/api/acts/ad-pt6a-30-propeller-governor-assembly/important-cases","documents":"/api/acts/ad-pt6a-30-propeller-governor-assembly/documents"}}