{"id":"F2006B08377","name":"AD/CESSNA 400/93 Amdt 1 - Crossfeed Fuel Line","slug":"ad-cessna-400-93-amdt-1-crossfeed-fuel-line","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115801,"registerId":"commonwealth-F2006B08377-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 400/93 Amdt 1 - Crossfeed 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)  Cessna 400 Series Aeroplanes\n\n \n\nAD/CESSNA 400/93\n\nAmdt 1\n\n\nCrossfeed Fuel Line 5/88\n\n \n\nApplicability: Models 414 with Serial Nos 414-0001 through 414-0965.\n\n \n\nRequirement: Action in accordance with Cessna Service Bulletin No MEB87-7 Revision 1.\n\n \n\nNote: FAA AD 88-03-07 Amdt 39-5841 refers.\n\n \n\nCompliance: Prior to the issue of the next Maintenance Release after 19 May 1988.\n\n \n\nBackground: The FAA has received reports of fuel leaks caused by chafing of the crossfeed fuel lines. The requirements of this AD will ensure proper clearance between the crossfeed fuel lines and firewall stiffener and eliminate the potential fire hazard due to fuel leakage. This Amendment is issued to reflect a revision of the requirement document, which requires an additional inspection.\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":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"The amendment updates the required action to reference Cessna Service Bulletin MEB87-7 Revision 1, which adds an additional inspection. Applicability remains Models 414 serial nos 414-0001 through 414-0965, and compliance timing remains prior to the next Maintenance Release after 19 May 1988."},"complexity_factors":["Narrow applicability limited to Cessna Model 414 serial nos 414-0001 through 414-0965","Normative reliance on an external document (Cessna Service Bulletin MEB87-7 Revision 1) for required actions","Amendment introduces an additional inspection, increasing compliance steps","Safety-critical subject matter (fuel line routing and clearance) raises the need for qualified maintenance","Time‑bound compliance (must be done prior to the next Maintenance Release after 19 May 1988)","Potential resource and scheduling impact on operators and maintenance providers to perform inspection/rectification"],"plain_english_summary":"Requires owners/operators of Cessna Model 414 aircraft (serial nos 414-0001 to 414-0965) to carry out the actions specified in Cessna Service Bulletin MEB87-7 Revision 1 to inspect and correct the crossfeed fuel line routing and ensure clearance from the firewall stiffener. Compliance must occur before the next Maintenance Release after 19 May 1988. The directive responds to FAA reports of fuel-line chafing and adds an extra inspection to reduce the risk of fuel leakage and potential fire."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted safety directive. The amendment simply updates the referenced service bulletin to a revised version requiring an additional inspection — it does not expand the aircraft types covered or introduce new categories of requirements."},"complexity_factors":["Single, specific aircraft model and serial number range","Only one substantive requirement: follow an external service bulletin","No defined terms section","No nested conditions or exceptions","Straightforward compliance deadline","Cross-reference to only one external document (FAA AD) and one internal document (Cessna bulletin)"],"plain_english_summary":"Owners/operators of Cessna 414 serials 414‑0001 through 414‑0965 must inspect and repair a crossfeed fuel line that can rub on a firewall stiffener, risking fuel leaks and fire. CASA’s mandatory AD requires compliance with Cessna Service Bulletin MEB87‑7 Revision 1 before the next Maintenance Release issued after 19 May 1988. Adopted from the FAA, the directive prevents in‑flight fires."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-93-amdt-1-crossfeed-fuel-line","history":"/api/acts/ad-cessna-400-93-amdt-1-crossfeed-fuel-line/history","analysis":"/api/acts/ad-cessna-400-93-amdt-1-crossfeed-fuel-line/analysis","conflicts":"/api/acts/ad-cessna-400-93-amdt-1-crossfeed-fuel-line/conflicts","importantCases":"/api/acts/ad-cessna-400-93-amdt-1-crossfeed-fuel-line/important-cases","documents":"/api/acts/ad-cessna-400-93-amdt-1-crossfeed-fuel-line/documents"}}