{"id":"F2006B05773","name":"AD/PA-31/69 - Fuel System Control Cables - Inspection","slug":"ad-pa-31-69-fuel-system-control-cables-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135632,"registerId":"commonwealth-F2006B05773-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/69 - Fuel System Control Cables - Inspection","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-31 Series Aeroplanes\n\n \n\nAD/PA-31/69 Fuel System Control Cables - Inspection 7/78\n\nApplicability: PA31, PA31-300 and PA31-325 Navajo with S/Nos. 31-2 to 31-7612065. PA31P with S/Nos. 31P-1 to 31P-7630017.\n\n \n\nDocument: 1. Piper SB No. 507; or\n\n \n\n2. FAA AD 77-26-02.\n\n \n\nCompliance: Within 100 hours time in service after 31 July 1978 and thereafter at intervals not exceeding 100 hours.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue Airworthiness Directive issued in 1978. It has not grown beyond its original purpose of mandating fuel system control cable inspections for specific Piper aircraft. ADs are typically narrow, targeted instruments and this one remains confined to its original safety scope."},"complexity_factors":["Single, specific maintenance task (fuel cable inspection)","Limited applicability — only 4 specific aircraft models with defined serial number ranges","Simple compliance structure: one-time initial inspection plus recurring interval","No defined terms section, no cross-references to other legislation beyond the two source documents","No conditional logic, exceptions, or nested provisions","Extremely short document — essentially a standardised form with blanks filled in"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific **Piper PA-31 Navajo aircraft** to inspect their **fuel system control cables**.\n\n**Who it affects:**\n- Owners and operators of Piper PA-31, PA-31-300, PA-31-325, and PA-31P aircraft with specific serial numbers (roughly those built between serial number 31-2 up to 31-7612065 for the standard models, and 31P-1 to 31P-7630017 for the pressurised model).\n\n**What it requires:**\n- An inspection of the fuel system control cables must be carried out **within 100 hours of flying time** after 31 July 1978.\n- After that first inspection, the check must be repeated **every 100 hours of flying time** (ongoing requirement).\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety instructions. If you don't comply, your aircraft is considered unairworthy — meaning you can't legally fly it. This particular AD was issued because of safety concerns identified in a Piper Service Bulletin (SB 507) and a US Federal Aviation Administration directive (FAA AD 77-26-02), suggesting there was a risk of fuel system cable failure that could affect engine operation or fuel management.\n\n**Key point:** This is not optional maintenance advice — it's a legal requirement tied to the aircraft's certificate of airworthiness."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument applies to the specific Piper PA-31 series aeroplanes and serial number ranges listed and requires inspections at the stated 100-hour intervals, as set out in the document. There is no text in the provided instrument indicating a change to that scope; the AD remains limited to the named models/serial numbers and the specified compliance timetable. (See \"Applicability\" and \"Compliance\".)"},"complexity_factors":["Narrow technical scope limited to specific Piper PA-31 models and serial number ranges (low breadth). (See \"Applicability\".)","Clear, simple recurring compliance interval (every 100 hours time in service). (See \"Compliance\".)","Cross-reference to external technical documents (Piper SB No. 507 or FAA AD 77-26-02) increases operational dependence on those documents for procedural detail. (See \"Document\".)","No detailed enforcement, exemption, or repair criteria in the AD text itself, requiring reliance on other regulatory or technical materials for full implementation. (See entire AD.)"],"plain_english_summary":"This AD mandates recurring inspections of fuel system control cables on specified Piper PA‑31 series aircraft, to be performed per Piper Service Bulletin No. 507 or FAA AD 77‑26‑02. The first inspection is required within 100 hours TIS after 31 July 1978 and then at intervals not exceeding 100 hours. It affects aircraft owners/operators and their maintenance providers, who must carry out and fund the inspections and any corrective work as a regulatory safety obligation."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-69-fuel-system-control-cables-inspection","history":"/api/acts/ad-pa-31-69-fuel-system-control-cables-inspection/history","analysis":"/api/acts/ad-pa-31-69-fuel-system-control-cables-inspection/analysis","conflicts":"/api/acts/ad-pa-31-69-fuel-system-control-cables-inspection/conflicts","importantCases":"/api/acts/ad-pa-31-69-fuel-system-control-cables-inspection/important-cases","documents":"/api/acts/ad-pa-31-69-fuel-system-control-cables-inspection/documents"}}