{"id":"F2006B07499","name":"AD/TSA-600/35 - Turbo Charger Oil Supply Hose Security","slug":"ad-tsa-600-35-turbo-charger-oil-supply-hose-security","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49969,"registerId":"commonwealth-F2006B07499-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TSA-600/35 - Turbo Charger Oil Supply Hose Security","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-600/35 Turbo Charger Oil Supply Hose Security 3/86\n\nApplicability: All Aerostar Aircraft with Automatic Waste Gate Controllers and Turbo oil Supply Hose Replacement kit, Piper Part NO 764-951V, installed per Piper Service Bulletin No 761. Affected Aircraft include the following:\n\nPA-60-601 Aerostar 601 serial Nos prior to 61- 0342-112 with retrofit option 106 (Automatic waste gate controller) installed. PA-60-601 Aerostar 601 serial Nos 61- 0342-112 TO 61-0880-816257 PA-60-601P Aerostar 601P serial Nos 61P-0157-001 TO 61P-0860-8163455 PA-60-602P Aerostar 602P serial Nos 62P-0750- 8165001 AND 62P-0861- 8165002 to 60-8365010 PA-60-700P Aerostar 700P Serial Nos 60- 8423001 to 60-8423025.\n\nRequirement: Clamp the turbocharger oil supply hose in accordance with the instructions, Piper SB 815.\n\nCompliance: Within 10 hours time in service after 31st January 1986.\n\nBackground: Due to loosening or breakage of the ties securing the turbocharger oil supply hose to the turbo charger support bracket the hose is being burnt. If this condition is not rectified the hose may fail resulting in an inflight fire, oil loss and/or engine failure.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive remains tightly scoped to its original purpose: addressing a specific mechanical defect in specific Piper Aerostar aircraft. The applicability criteria (specific serial numbers, specific retrofit option) precisely target the affected fleet without expansion."},"complexity_factors":["Single, specific mechanical requirement (clamp installation)","Limited applicability scope (specific aircraft models and serial numbers only)","Clear compliance deadline (10 hours time in service after fixed date)","No defined terms section or interpretation provisions","No cross-references to other legislation beyond the manufacturer service bulletin","Straightforward conditional logic: if aircraft matches criteria → must comply","Background explanation provided in plain language"],"plain_english_summary":"This Airworthiness Directive mandates that owners/operators of certain Piper Aerostar 600/700 series aircraft fitted with the specified turbocharger retrofit secure the turbocharger oil supply hose with a clamp per Piper Service Bulletin 815 within 10 flight hours after 31 Jan 1986. It responds to broken ties allowing the hose to chafe and burn through, creating risk of in‑flight fire, engine failure and crash. Compliance is mandatory."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope is limited to the specific Aerostar models and serial-number ranges fitted with the automatic waste gate controller and the Piper hose kit as listed (Applicability). The directive mandates a one-off physical modification—clamping the hose per Piper SB 815 (Requirement)—to be completed within the specified 10‑hour window (Compliance). There is no indication in the text that the applicability or substantive requirement was broadened beyond those listed aircraft."},"complexity_factors":["Narrow technical scope: applies only to Aerostar 600/700 series with automatic waste gate controllers and a specific Piper kit (Applicability).","External dependency: compliance requires following detailed instructions in Piper Service Bulletin 815 rather than full method in the directive (Requirement).","Short compliance window: work must be completed within 10 hours time in service after a fixed date, creating operational scheduling pressure for operators (Compliance).","Serial-number specificity: multiple serial-number ranges and retrofit-option references increase administrative checks to determine applicability (Applicability).","Safety-critical consequence: failure to comply risks inflight fire, oil loss or engine failure, making enforcement and documentation important (Background).","Implied cost and labour burden falls on aircraft owners/operators to obtain clamps/perform maintenance or engage a certified maintenance organisation (Requirement / Compliance)."],"plain_english_summary":"This airworthiness directive requires operators of specified Aerostar 600/700 series aeroplanes fitted with automatic waste gate controllers and the Piper oil-supply hose replacement kit to clamp the turbocharger oil supply hose as instructed in Piper Service Bulletin 815. It applies to listed serial-numbered aircraft and must be done within 10 hours time-in-service after 31 January 1986 to prevent hose burning that could cause oil loss, inflight fire or engine failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tsa-600-35-turbo-charger-oil-supply-hose-security","history":"/api/acts/ad-tsa-600-35-turbo-charger-oil-supply-hose-security/history","analysis":"/api/acts/ad-tsa-600-35-turbo-charger-oil-supply-hose-security/analysis","conflicts":"/api/acts/ad-tsa-600-35-turbo-charger-oil-supply-hose-security/conflicts","importantCases":"/api/acts/ad-tsa-600-35-turbo-charger-oil-supply-hose-security/important-cases","documents":"/api/acts/ad-tsa-600-35-turbo-charger-oil-supply-hose-security/documents"}}