{"id":"F2006B05725","name":"AD/PA-31/2 - Electric Wiring and Fuel Crossfeed Line - Inspection and Modification","slug":"ad-pa-31-2-electric-wiring-and-fuel-crossfeed-line-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135524,"registerId":"commonwealth-F2006B05725-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/2 - Electric Wiring and Fuel Crossfeed Line - Inspection and 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-31 Series Aeroplanes\n\nAD/PA-31/2 Electric Wiring and Fuel Crossfeed Line - Inspection and Modification\n\n  \n7/68\n\nApplicability: All models with S/Nos. 31-2 to 31-220, 31-222, 31-223, 31-225, 31-228, 31-234, 31-\n\n237, 31-238, 31-240, 31-242 and 31-243.\n\nRequirement: 1. Remove fuel control panel cover assembly P/N 41448-00 and inspect all wiring for signs of chafing or interference at the fuel crossfeed line, the spar structure and the fuel control cable. Also inspect for chafing of the fuel crossfeed line against the spar structure and the P/N 41448-00 cover. Replace all chafed wires and any fuel crossfeed line chafed or worn in excess of 10 percent of the wall thickness (approximately .003 inch).\n\n2. Re-route wiring and secure fuel crossfeed line to assure adequate clearance in accordance with Piper SB No. 278. (Kit No. 760216) dated 27 May 1968.\n\nCompliance: Inspect within 5 hours time in service after 31 May 1968. Modify before 1 August 1968.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a vintage 1968 Airworthiness Directive that remains precisely scoped to its original purpose: addressing a specific wiring and fuel line chafing defect in early Piper PA-31 aircraft. The scope has not expanded beyond this original safety issue."},"complexity_factors":["Single, specific aircraft type and limited serial number range (12 discrete serial number ranges listed)","Two clear sequential requirements: inspection/replacement, then modification","Single technical reference to external document (Piper Service Bulletin 278)","Simple compliance timeline with two fixed deadlines","No defined terms section, no cross-references to other legislation, no conditional exceptions","Physical measurement standard provided (10% wall thickness ≈ 0.003 inch)"],"plain_english_summary":"This CASA Airworthiness Directive applies to specified Piper PA‑31 aircraft (serials from 1964–1968). It warns that fuel control panel wiring and the fuel crossfeed line can chafe against each other and the airframe, risking fuel leaks, fire, or electrical failure.\n\nOwners must inspect promptly (within 5 flying hours after 31 May 1968), replace any damaged wiring and fuel line worn >10% of wall thickness, and reroute/secure the wiring and fuel line per Piper Service Bulletin 278 before 1 August 1968. Compliance is mandatory."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The directive, as presented, applies to the specified serial numbers and prescribes inspection and modification steps. The text contains no indication that the scope has been amended or expanded from an earlier version within this document."},"complexity_factors":["Narrow applicability by serial number range — owners must verify aircraft S/Ns against the list.","Detailed physical tasks: removal of fuel control panel P/N 41448-00 and inspection of wiring at multiple interfaces (crossfeed line, spar, control cable).","Quantitative replacement threshold for the fuel crossfeed line (chafed/worn in excess of 10% wall thickness, approx. 0.003 inch) requiring measurement/judgement.","Mandatory modification routing to follow an external technical document (Piper SB No.278) and use of a specified kit (Kit No.760216).","Short compliance windows: inspect within 5 hours time in service after 31 May 1968 and complete modification before 1 August 1968, increasing logistical pressure.","Costs and logistics borne by aircraft owners/operators — inspection labour, potential parts replacement and kit acquisition are required.","Technical discretion required of maintenance personnel to determine acceptability of chafing and to perform rerouting per the service bulletin."],"plain_english_summary":"This airworthiness directive requires owners/operators of specific Piper PA‑31 aeroplanes (listed serial numbers) to remove the fuel control panel, inspect wiring and the fuel crossfeed line for chafing, replace damaged items, and reroute/secure the line using Piper Service Bulletin No.278 and Kit No.760216. It imposes tight compliance deadlines and is intended to address chafing that could cause fuel leaks or electrical faults, so affected operators must arrange inspections, parts and modifications."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-2-electric-wiring-and-fuel-crossfeed-line-inspection-and-modification","history":"/api/acts/ad-pa-31-2-electric-wiring-and-fuel-crossfeed-line-inspection-and-modification/history","analysis":"/api/acts/ad-pa-31-2-electric-wiring-and-fuel-crossfeed-line-inspection-and-modification/analysis","conflicts":"/api/acts/ad-pa-31-2-electric-wiring-and-fuel-crossfeed-line-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-pa-31-2-electric-wiring-and-fuel-crossfeed-line-inspection-and-modification/important-cases","documents":"/api/acts/ad-pa-31-2-electric-wiring-and-fuel-crossfeed-line-inspection-and-modification/documents"}}