{"id":"F2006B05898","name":"AD/PA-34/27 Amdt 1 - Main Fuel Supply Line - Inspection and Modification","slug":"ad-pa-34-27-amdt-1-main-fuel-supply-line-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135949,"registerId":"commonwealth-F2006B05898-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-34/27 Amdt 1 - Main Fuel Supply Line - Inspection and Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-34 (Seneca) Series Aeroplanes\n\n \n\nAD/PA-34/27\n\nAmdt 1\n\n\nMain Fuel Supply Line - Inspection and Modification\n\n\n9/78\n\n \n\nApplicability: Model PA-34-200T with S/Nos. 34-7570001 to 34-787027. Document:  1. Piper SB No. 596A; or\n\n2. FAA AD 78-21-03 Amendment 39-3316.\n\n \n\nCompliance: Within 25 hours time in service after 30 October 1978.\n\n \n\nNote: As the amended requirement document now includes both left and right nacelles, compliance with the previous issue of this Directive does not satisfy compliance with this issue of the Directive.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2101},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The amendment expands the inspection and modification requirement to cover both left and right engine nacelles. The previous issue of the directive did not cover both sides, meaning aircraft owners who complied with the earlier version must still comply with this amended version to satisfy the expanded safety requirements."},"complexity_factors":["Extremely narrow applicability limited to single aircraft model and specific serial number range","Addresses single mechanical component (fuel supply lines)","Simple compliance timeframe with no conditional exceptions","Only two external reference documents"],"plain_english_summary":"**What this does**\n\nThis safety directive orders owners and operators of specific Piper Seneca aircraft to inspect and modify the main fuel supply lines to prevent potential fuel leaks or engine failure.\n\n**Who it affects**\n\nOwners and operators of Piper PA-34-200T model aircraft with serial numbers between 34-7570001 and 34-787027.\n\n**What must be done**\n\n*   **Inspect** the main fuel supply lines located in **both** the left and right nacelles (the engine housings on the wings)\n*   **Modify** the fuel lines according to specifications in Piper Service Bulletin No. 596A (or the equivalent US FAA directive)\n*   **Complete the work** within 25 hours of flight time after 30 October 1978\n\n**Important warning**\n\nIf you already followed the previous version of this directive, you must still follow this amended version. The earlier version did not cover both sides of the aircraft, so previous compliance does not count for this updated requirement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-34-27-amdt-1-main-fuel-supply-line-inspection-and-modification","history":"/api/acts/ad-pa-34-27-amdt-1-main-fuel-supply-line-inspection-and-modification/history","analysis":"/api/acts/ad-pa-34-27-amdt-1-main-fuel-supply-line-inspection-and-modification/analysis","conflicts":"/api/acts/ad-pa-34-27-amdt-1-main-fuel-supply-line-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-pa-34-27-amdt-1-main-fuel-supply-line-inspection-and-modification/important-cases","documents":"/api/acts/ad-pa-34-27-amdt-1-main-fuel-supply-line-inspection-and-modification/documents"}}