{"id":"F2006B07495","name":"AD/TSA-600/31 - Turbocharger Oil System Supply Hose - Replacement","slug":"ad-tsa-600-31-turbocharger-oil-system-supply-hose-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49956,"registerId":"commonwealth-F2006B07495-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TSA-600/31 - Turbocharger Oil System Supply Hose - Replacement","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nAerostar (Piper/Ted Smith) 600 and 700 Series Aeroplanes\n\nAD/TSA-600/31 Turbocharger Oil System Supply\n\nHose \\- Replacement\n\n  \n7/83\n\nApplicability: All models of PA-60-601 Aerostar with S/Nos. 61-0342-112 through 61-0880- 8162157 and prior airframe sequence numbers having retrofit option 106 (automatic wastegate controller) installed. PA-60-601P Aerostar with S/Nos. 61P-0157-001 through 61P-0860-8163455. PA-60-602P Aerostar with S/Nos. 62P-0750-8165001, 62P-0861-8165002 through 60-8365010.\n\nDocument: Piper SB No. 761.\n\nCompliance: Within 100 hours time in service after 31st August 1983.\n\nBackground: Reports have been received by the manufacturer of burned and chafed Turbocharger oil supply hoses. This condition will be alleviated by the fitting of higher temperature hoses and rerouting.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted airworthiness directive addressing a specific safety defect in specific aircraft. It has not expanded beyond its original purpose of mandating hose replacement to prevent fire hazards."},"complexity_factors":["Single, specific technical requirement (hose replacement)","Limited applicability defined by aircraft model and serial number ranges","Simple compliance deadline (100 hours time-in-service)","No nested exceptions or conditional logic","No cross-references to other legislation beyond the enabling Civil Aviation Regulations","Short document (approximately 150 words of substantive content)"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for specific Piper Aerostar aircraft models.\n\n**What it does:**\n- Requires owners/operators of certain Aerostar 600 and 700 series planes to **replace the turbocharger oil supply hoses**\n- The new hoses must be higher temperature-rated and rerouted differently to prevent damage\n\n**Who it affects:**\n- Owners and operators of specific Piper PA-60-601, PA-60-601P, and PA-60-602P Aerostar aircraft with particular serial numbers\n- Specifically applies to planes with automatic wastegate controllers (a turbocharger control device)\n\n**Why it matters:**\n- The manufacturer received reports of **burned and chafed hoses** — a serious fire risk in aircraft\n- This is a **mandatory compliance** item, not optional\n- Must be completed within **100 hours of flight time** after 31 August 1983\n\n**Key details:**\n- Based on Piper Service Bulletin No. 761\n- Compliance deadline: 100 hours time-in-service after 31 August 1983"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD's scope is limited to the specific Aerostar PA-60 model variants and serial number ranges listed, and to airframes with retrofit option 106 where indicated. The instrument does not expand coverage beyond those aircraft or add additional actions beyond replacing and rerouting the turbocharger oil supply hose per Piper SB No. 761 (Applicability; Document). Therefore the scope as stated in the text has not changed from its expressed purpose."},"complexity_factors":["Narrow applicability by specific models and serial numbers (Applicability)","Single corrective action required (replace and reroute hose) rather than multiple interlocking measures (Background; Document)","External reliance on Piper Service Bulletin No. 761 for the technical procedure (Document)","Fixed, short compliance window tied to a calendar date and flight-hours calculation (Compliance)","Practical logistics (parts procurement, scheduling maintenance) create operational complexity despite straightforward technical requirement"],"plain_english_summary":"This AD mandates replacing and rerouting the turbocharger oil supply hose on specified Aerostar PA‑60 (600/700 series) aircraft per Piper Service Bulletin No. 761, to be completed within 100 hours TIS after 31 August 1983. It targets owners/operators and maintenance organisations for the listed serial numbers (including certain retrofit configurations) to address reported burned/chafed hoses; owners/operators bear parts, labour and downtime costs."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tsa-600-31-turbocharger-oil-system-supply-hose-replacement","history":"/api/acts/ad-tsa-600-31-turbocharger-oil-system-supply-hose-replacement/history","analysis":"/api/acts/ad-tsa-600-31-turbocharger-oil-system-supply-hose-replacement/analysis","conflicts":"/api/acts/ad-tsa-600-31-turbocharger-oil-system-supply-hose-replacement/conflicts","importantCases":"/api/acts/ad-tsa-600-31-turbocharger-oil-system-supply-hose-replacement/important-cases","documents":"/api/acts/ad-tsa-600-31-turbocharger-oil-system-supply-hose-replacement/documents"}}