{"id":"F2006B06043","name":"AD/PA-46/8 - Turbocharger Oil Scavenge Reservoir Inspection/Modification, and Lower Cowl Modification","slug":"ad-pa-46-8-turbocharger-oil-scavenge-reservoir-inspection-modification-and-lower-cowl-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114441,"registerId":"commonwealth-F2006B06043-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-46/8 - Turbocharger Oil Scavenge Reservoir Inspection/Modification, and Lower Cowl Modification","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)  \nPiper PA-46 (Malibu) Series Aeroplanes\n\nAD/PA-46/8 Turbocharger Oil Scavenge Reservoir\n\nInspection/Modification, and Lower Cowl Modification\n\n  \n4/85 TX\n\nApplicability: All models PA 46-310P with S/Nos as detailed in the Requirement Document. Requirement: Piper SB No 790A.\n\nCompliance: Part 1 of Requirement Document\n\nUnless already accomplished, before further flight after 11 March 1985 and thereafter at intervals not exceeding 10 hours time in service until modified by installation of reservoir Part No 646954 or 646955.\n\nPart 2 and 3 of Requirement Document\n\nPrior to the issue of the next maintenance release after 11 March 1985.\n\nBackground: An inflight engine failure has been reported by the manufacturer after an incident when complete separation of the turbocharger oil scavenger reservoir resulted in total loss.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2113},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This directive maintains its original focused scope addressing the specific safety defect of turbocharger oil reservoir separation. It imposes targeted inspection and modification requirements on the affected aircraft systems without expanding to unrelated airworthiness matters."},"complexity_factors":["Core obligations contained in externally referenced 'Requirement Document' and Piper Service Bulletin 790A not reproduced in the text","Dual compliance mechanisms: repetitive interim inspections versus permanent modification with specific part numbers","Applicability limited to specific serial numbers listed only in the separate Requirement Document","Technical aviation terminology requiring domain knowledge (scavenge reservoir, maintenance release, cowling)"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners/operators of certain Piper PA-46-310P aircraft (specific serial numbers) to fix a design defect that can cause complete engine failure. It orders immediate inspection of the turbocharger oil scavenge reservoir (with repeat checks until replaced by the improved part) and modification of the lower engine cowling to prevent the reservoir from detaching and causing total engine loss."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-46-8-turbocharger-oil-scavenge-reservoir-inspection-modification-and-lower-cowl-modification","history":"/api/acts/ad-pa-46-8-turbocharger-oil-scavenge-reservoir-inspection-modification-and-lower-cowl-modification/history","analysis":"/api/acts/ad-pa-46-8-turbocharger-oil-scavenge-reservoir-inspection-modification-and-lower-cowl-modification/analysis","conflicts":"/api/acts/ad-pa-46-8-turbocharger-oil-scavenge-reservoir-inspection-modification-and-lower-cowl-modification/conflicts","importantCases":"/api/acts/ad-pa-46-8-turbocharger-oil-scavenge-reservoir-inspection-modification-and-lower-cowl-modification/important-cases","documents":"/api/acts/ad-pa-46-8-turbocharger-oil-scavenge-reservoir-inspection-modification-and-lower-cowl-modification/documents"}}