{"id":"F2006B05699","name":"AD/PA-31/112 - Crossover Fuel Line","slug":"ad-pa-31-112-crossover-fuel-line","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135498,"registerId":"commonwealth-F2006B05699-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/112 - Crossover Fuel Line","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-31/112 Crossover Fuel Line 6/86 DM\n\nApplicability: All model PA-31-300/310 Navajo S/Nos 31-2 to 31-544. Requirement:  Action in accordance with Piper Service Bulletin No. 825. Compliance:               Within 25 hours time in service after 20 May 1986.\n\nBackground: A report was received of an in-cockpit fire due to a fuel leak from the crossover fuel line at the fuel control panel.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2134},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope of addressing the specific fuel line fire hazard in the specified Piper aircraft models. It is a reactive safety measure that has not expanded beyond its initial technical purpose."},"complexity_factors":["Single, specific mechanical issue addressed","No defined terms or interpretation section","Simple applicability test (specific aircraft models and serial numbers)","No cross-references to other legislative provisions","Single compliance action with clear deadline"],"plain_english_summary":"**What this is:** An Airworthiness Directive (mandatory safety order) issued by the Civil Aviation Safety Authority under the Civil Aviation Regulations.\n\n**Who it affects:** Owners and operators of specific Piper Navajo aircraft — specifically models PA-31-300 and PA-31-310 with serial numbers 31-2 through 31-544.\n\n**What it requires:** Inspect and repair the **crossover fuel line** located at the fuel control panel. Operators must follow the instructions in **Piper Service Bulletin No. 825** to carry out the work.\n\n**When:** Within 25 hours of flight time after the directive takes effect.\n\n**Why it matters:** This directive responds to a safety incident where this fuel line leaked and caused an actual fire inside the cockpit. The mandatory repair prevents potentially catastrophic in-flight fires."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-112-crossover-fuel-line","history":"/api/acts/ad-pa-31-112-crossover-fuel-line/history","analysis":"/api/acts/ad-pa-31-112-crossover-fuel-line/analysis","conflicts":"/api/acts/ad-pa-31-112-crossover-fuel-line/conflicts","importantCases":"/api/acts/ad-pa-31-112-crossover-fuel-line/important-cases","documents":"/api/acts/ad-pa-31-112-crossover-fuel-line/documents"}}