{"id":"F2017L00577","name":"AD/PA-34/27 Amdt 2 - Main Fuel Supply Line - Inspection and Modification","slug":"ad-pa-34-27-amdt-2-main-fuel-supply-line-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":96348,"registerId":"commonwealth-F2017L00577-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-34 (Seneca) Series Aeroplanes","sectionType":"part","heading":"Piper PA-34 (Seneca) Series Aeroplanes","content":"# Piper PA-34 (Seneca) Series Aeroplanes\n\n| AD/PA-34/27 Amdt 2 | Main Fuel Supply Line - Inspectionand Modification | 10/2017 |\n| ------------------ | -------------------------------------------------- | ------- |\n\n| Applicability: | Model PA-34-200T aircraft with serial numbers 34-7570001 to 34-7870207.                                                                                            |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | 1. Piper Service Bulletin No. 596A as in force at the commencement of this AD; or2. FAA AD 78-21-03 Amendment 39-3316, as in force at the commencement of this AD. |\n| Compliance:    | Within 25 hours time in service after 30 October 1978.Note: Previous compliance with AD/PA-34/27 Amdt 1 constitutes compliance with this AD.                       |\n|                | This AD commences on 26 May 2017.                                                                                                                                  |\n| Background:    | Amendment 2 of the AD corrects a typographical error in the serial number range in the applicability of the AD.                                                    |\n\n![](image.001.png)\n\nBenjamin Wilson  \nDelegate of the Civil Aviation Safety Authority\n\n16 May 2017","sortOrder":0},{"sectionNumber":"AD/PA-34/27 Amdt 2","sectionType":"part","heading":"AD/PA-34/27 Amdt 2","content":"## AD/PA-34/27 Amdt 2","sortOrder":1},{"sectionNumber":"Main Fuel Supply Line - Inspectionand Mo","sectionType":"part","heading":"Main Fuel Supply Line - Inspectionand Modification","content":"## Main Fuel Supply Line - Inspection  \nand Modification","sortOrder":2},{"sectionNumber":"10/2017","sectionType":"part","heading":"10/2017","content":"## 10/2017","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Scope was adjusted to correct a typographical error in the applicability serial-number range. The substantive requirement (inspect/modify main fuel supply line per Service Bulletin No. 596A or FAA AD 78-21-03) remains the same; the amendment only clarifies which serial numbers are affected."},"complexity_factors":["Narrow aircraft applicability (specific PA-34-200T serial-number range) reduces scope but requires accurate serial-number checking by owners/operators.","Mandates compliance by following external documents (Piper Service Bulletin No. 596A or FAA AD 78-21-03), which creates dependency on and administrative steps to obtain and apply those documents.","Short compliance window referenced (25 hours time-in-service after 30 October 1978) creates potential record-keeping ambiguity for operators and maintenance providers.","Amendment is administrative (corrects a typographical error in serial-number range) — low technical change but potential for prior misapplication where serial numbers were misread.","Clause accepting prior compliance with AD/PA-34/27 Amdt 1 reduces duplicative work but requires verification of earlier compliance records."],"plain_english_summary":"Requires inspection and, where necessary, modification of the main fuel supply line on Piper PA-34-200T aeroplanes with serial numbers 34-7570001 to 34-7870207. Compliance must follow Piper Service Bulletin No. 596A or FAA AD 78-21-03 within 25 hours time-in-service; prior compliance with AD/PA-34/27 Amdt 1 is accepted. The amendment corrects a typographical error in the serial-number range."},"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 amendment makes no substantive change to scope. It corrects a typographical error in the serial number range in the applicability section. The technical requirements, compliance timing, and safety intent remain identical to previous versions."},"complexity_factors":["Very short document (under 300 words)","Only 2 substantive requirements (inspect/modify per specified standards)","Single applicability criterion (specific model and serial number range)","No defined terms section","No cross-references to other legislation (only references to technical documents: Piper Service Bulletin and FAA AD)","Simple compliance structure: one deadline, one exemption clause (previous compliance counts)","Minimal conditional logic — essentially 'if you own this plane, do this by this date'"],"plain_english_summary":"This AD requires owners/operators of certain Piper PA-34-200T aeroplanes to inspect and modify the main fuel supply line (per Piper SB 596A or equivalent FAA AD) to prevent fuel leaks or failures that could cause engine stoppage or fire. It applies to serial numbers 34-7570001 through 34-7870207, with compliance required within 25 flight hours after 30 October 1978. Amendment 2 (2017) only corrects a serial-number typo; previous Amendment 1 compliance remains valid."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-34-27-amdt-2-main-fuel-supply-line-inspection-and-modification","history":"/api/acts/ad-pa-34-27-amdt-2-main-fuel-supply-line-inspection-and-modification/history","analysis":"/api/acts/ad-pa-34-27-amdt-2-main-fuel-supply-line-inspection-and-modification/analysis","conflicts":"/api/acts/ad-pa-34-27-amdt-2-main-fuel-supply-line-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-pa-34-27-amdt-2-main-fuel-supply-line-inspection-and-modification/important-cases","documents":"/api/acts/ad-pa-34-27-amdt-2-main-fuel-supply-line-inspection-and-modification/documents"}}