{"id":"F2006B06086","name":"AD/PC-12/24 - Powerplant Tube/Pipe Assemblies","slug":"ad-pc-12-24-powerplant-tube-pipe-assemblies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114484,"registerId":"commonwealth-F2006B06086-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/PC-12/24 Powerplant Tube/Pipe Assembl","sectionType":"part","heading":"AD/PC-12/24 Powerplant Tube/Pipe Assemblies 3/2000 DM","content":"# AD/PC-12/24 Powerplant Tube/Pipe Assemblies 3/2000 DM\n\nApplicability: PC-12 and PC-12/45 aeroplanes Manufacturer Serial Number (MSN) MSN 101 through MSN 301 inclusive.\n\nRequirement: Carry out the following in accordance with Pilatus PC12 Service Bulletin No. 71-004 dated 22 December 1999.\n\nInspect the torque oil pressure and Py pressure tube/pipe assemblies, installed on the engine, for,\n\n    (a) abrasive damage and distortion, replacing any defective tube/pipe found with a new tube/pipe; and\n\n    (b) adequate clearance between the individual tube/pipe assemblies and the surrounding components, adjusting, as necessary, the tube/pipe assemblies to achieve the required clearance.\n\nNote: Swiss FOCA AD HB 2000-007 refers.\n\nCompliance: Within 10 days or 25 hours time-in-service after the effective date of this AD. This Airworthiness Directive becomes effective on 27 January 2000.\n\nBackground: Abrasive damage (chafing) of the torque pressure and Py pressure tube/pipe assemblies has been found on three PC-12 aeroplanes.\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 20 January 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 27 January 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 is a standard airworthiness directive with narrow, targeted scope addressing a specific safety issue on specific aircraft. The scope matches the original intent of correcting an identified unsafe condition."},"complexity_factors":["Very short document (approximately 250 words)","Only 3 defined elements: specific aircraft models (PC-12/PC-12/45), serial number range (MSN 101-301), and referenced service bulletin","Single, straightforward requirement with two sub-tasks (inspection/replacement and clearance check/adjustment)","Simple compliance deadline (10 days or 25 hours)","No nested exceptions or conditional logic","Single cross-reference to Swiss aviation authority document (informational only)"],"plain_english_summary":"CASA has issued a mandatory safety order for Pilatus PC‑12 and PC‑12/45 aeroplanes (S/N 101–301) after chafing was found on the torque oil pressure and Py pressure tubes.  \n\nOwners/operators must, within 10 days or 25 flight hours of 27 Jan 2000, inspect those tubes, replace any damaged parts, verify clearance and reposition if needed. Aircraft may not fly until compliant to prevent potential engine problems or failure."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD's scope aligns with the stated safety concern: it targets PC-12/PC-12/45 aeroplanes MSN 101–301 to address abrasive (chafing) damage observed on three aircraft and mandates inspection and corrective action per the manufacturer service bulletin (Background; Applicability; Requirement). It does not broaden applicability beyond those serial numbers or introduce additional regulatory powers; it references but does not expand on the Swiss FOCA AD (Note)."},"complexity_factors":["Narrow applicability: applies only to PC-12 and PC-12/45 aeroplanes MSN 101 through MSN 301 inclusive (Applicability).","Prescriptive technical action: inspection, replacement and adjustment must follow Pilatus Service Bulletin No. 71-004 dated 22 December 1999 (Requirement).","Short compliance window increases operational impact: within 10 days or 25 hours time-in-service after the effective date (Compliance).","Technical labour and parts: requires physical inspection for abrasive damage, potential part replacement and adjustment of tube/pipe clearances (Requirement).","Regulatory backing and international reference: issued under CAR 1998 subregulation 39.1(1) and notes Swiss FOCA AD HB 2000-007 (preamble and Note)."],"plain_english_summary":"This Airworthiness Directive requires operators of Pilatus PC-12 and PC-12/45 aeroplanes (MSN 101–301) to inspect engine torque oil pressure and Py pressure tubes/pipes for chafing or distortion, replace any defective parts, and adjust clearances per Pilatus Service Bulletin No. 71‑004 (22 Dec 1999). The AD responds to abrasive damage found on three aircraft and must be completed within 10 days or 25 flight hours, so operators bear the inspection, maintenance and parts‑replacement costs and must schedule the work promptly."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-12-24-powerplant-tube-pipe-assemblies","history":"/api/acts/ad-pc-12-24-powerplant-tube-pipe-assemblies/history","analysis":"/api/acts/ad-pc-12-24-powerplant-tube-pipe-assemblies/analysis","conflicts":"/api/acts/ad-pc-12-24-powerplant-tube-pipe-assemblies/conflicts","importantCases":"/api/acts/ad-pc-12-24-powerplant-tube-pipe-assemblies/important-cases","documents":"/api/acts/ad-pc-12-24-powerplant-tube-pipe-assemblies/documents"}}