{"id":"F2006B08181","name":"AD/CESSNA 310/54 - Auxiliary Fuel Pump Wiring Modification","slug":"ad-cessna-310-54-auxiliary-fuel-pump-wiring-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115386,"registerId":"commonwealth-F2006B08181-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 310/54 - Auxiliary Fuel Pump Wiring Modification","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 310 Series Aeroplanes\n\n \n\nAD/CESSNA 310/54 Auxiliary Fuel Pump Wiring Modification 12/89\n\nApplicability: All models 310 which have been modified in accordance with Cessna Service Bulletin MEB 88-3.\n\n \n\nRequirement: Unless already accomplished, action in accordance with Cessna Service Bulletin MEB 88-3 Revision 1.\n\n \n\nNote: This Requirement does not apply to aeroplanes that have not incorporated SB MEB 88-3.\n\n \n\nCompliance: Prior to the issue of the next Maintenance Release after 31 December 1989.\n\n \n\nBackground: Compliance with the original issue of SB MEB88-3 was not considered to warrant the issue of an Airworthiness Directive. This AD is raised to ensure that necessary features of Revision 1 are incorporated into modified aeroplanes.\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 AD maintains its original narrow scope. It targets a specific wiring modification for a specific aircraft model that had already undergone a specific prior modification. The background explicitly states this AD was raised solely to ensure Revision 1 features were incorporated, confirming the scope remained tightly focused on the original safety issue."},"complexity_factors":["Extremely short document (under 200 words)","Only 2 defined applicability criteria (aircraft model + prior modification status)","Single requirement with one cross-reference to external technical document (Cessna Service Bulletin MEB 88-3 Revision 1)","One explicit exemption (aircraft without the original SB MEB 88-3 modification)","Simple compliance deadline structure (date-based with Maintenance Release trigger)","No nested conditions, subsections, or legislative cross-references"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:** It requires owners or operators of specific Cessna 310 aeroplanes to update their aircraft's wiring for the auxiliary fuel pump. The update must follow \"Revision 1\" of Cessna Service Bulletin MEB 88-3.\n\n**Who it affects:** Only Cessna 310 model aircraft that were previously modified according to an earlier version of the same Cessna service bulletin (MEB 88-3). If your plane never had that original modification, this directive doesn't apply to you.\n\n**Why it matters:** The original service bulletin didn't trigger a mandatory directive, but CASA decided the updated \"Revision 1\" version contained important safety features that needed to be compulsory. The auxiliary fuel pump wiring is critical — if it fails, it could affect fuel delivery to the engines with potentially serious consequences.\n\n**The deadline:** Aircraft owners had to complete this modification before the next Maintenance Release (a formal document certifying an aircraft is airworthy) issued after 31 December 1989."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"Scope changed from the earlier treatment of SB MEB 88-3. The Background states the original SB was not considered to warrant an AD; this Directive makes Revision 1 of that SB mandatory for aircraft that had already incorporated the original SB. In effect, a previously non-mandatory service-bulletin outcome for modified 310s is converted into a regulatory requirement for that subset of aircraft."},"complexity_factors":["Narrow applicability: applies only to Cessna 310 aeroplanes modified under SB MEB 88-3 (clarifies target population).","External-document dependency: mandates compliance with Cessna Service Bulletin MEB 88-3 Revision 1 (requires access to and interpretation of the SB).","Binary technical action: a single wiring modification task is required (technical, but straightforward for qualified maintenance personnel).","Time constraint: compliance timing is pegged to the 'next Maintenance Release after 31 December 1989' (requires scheduling and record checks).","Exemption clause: explicitly does not apply to aeroplanes that have not incorporated SB MEB 88-3 (limits enforcement scope).","Regulatory enforcement: issued as an Airworthiness Directive by the Civil Aviation Safety Authority (transforms a service bulletin item into a mandatory regulatory requirement)."],"plain_english_summary":"This Airworthiness Directive requires Cessna 310 aeroplanes that previously incorporated Cessna Service Bulletin MEB 88-3 to comply with Revision 1 of that Service Bulletin. Owners/operators must implement the auxiliary fuel-pump wiring modification before the next maintenance release after 31 December 1989; the Civil Aviation Safety Authority says the Directive ensures Revision 1 features are present on already-modified aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-310-54-auxiliary-fuel-pump-wiring-modification","history":"/api/acts/ad-cessna-310-54-auxiliary-fuel-pump-wiring-modification/history","analysis":"/api/acts/ad-cessna-310-54-auxiliary-fuel-pump-wiring-modification/analysis","conflicts":"/api/acts/ad-cessna-310-54-auxiliary-fuel-pump-wiring-modification/conflicts","importantCases":"/api/acts/ad-cessna-310-54-auxiliary-fuel-pump-wiring-modification/important-cases","documents":"/api/acts/ad-cessna-310-54-auxiliary-fuel-pump-wiring-modification/documents"}}