{"id":"F2006B08164","name":"AD/CESSNA 310/37 - Tip Tank Fuel Seepage - Inspection","slug":"ad-cessna-310-37-tip-tank-fuel-seepage-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115344,"registerId":"commonwealth-F2006B08164-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 310/37 - Tip Tank Fuel Seepage - 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)  Cessna 310 Series Aeroplanes\n\n \n\nAD/CESSNA 310/37 Tip Tank Fuel Seepage - Inspection 4/75\n\nApplicability: All models fitted with strobe lights in the wing tip fuel tank nose cap. Document:  1. Cessna SL ME73-4, or\n\n2. FAA AD 75-05-08.\n\n \n\nCompliance: Within 100 hours time in service after 30 April 1975 and thereafter at intervals not exceeding 100 hours time in service.\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":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The provided text sets a specific, limited scope: inspections for tip tank nose cap fuel seepage on Cessna 310s fitted with strobe lights, using the two cited documents and a fixed 100‑hour inspection interval from 30 April 1975. The instrument as supplied contains no language indicating an expansion or narrowing of that scope relative to its own stated applicability; therefore, based on the text provided, the scope has not changed from the directive's stated applicability."},"complexity_factors":["Narrow applicability limited to specified aircraft models and a specific equipment configuration (strobe lights in wing tip tank nose cap).","Single, clear compliance metric (100 hours time in service) with a fixed initial date reference (30 April 1975).","Compliance must follow one of two expressly referenced documents, reducing interpretive complexity about procedure.","No multistep approval, exemptions, or alternative means of compliance included in the provided text.","No detailed technical procedures or repair criteria reproduced in the text (these are in the referenced documents), which simplifies the directive but shifts technical complexity to external documents."],"plain_english_summary":"This directive mandates recurring inspections of the wing‑tip fuel tank nose cap on Cessna 310s that have strobe lights installed, using Cessna SL ME73‑4 or FAA AD 75‑05‑08. Owners/operators and maintenance organisations must inspect within 100 hours after 30 Apr 1975 and every 100 hours thereafter to detect fuel seepage and repair as needed."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue safety directive from 1975 addressing a specific mechanical defect. It has not expanded beyond its original purpose of ensuring fuel tank integrity on Cessna 310 aircraft with strobe light installations."},"complexity_factors":["Extremely short document (under 200 words)","Only 4 operative provisions: applicability, document references, compliance timing, and recurring interval","Single condition in applicability (strobe lights in wing tip tank nose cap)","No defined terms section — uses plain language","No cross-references to other legislation beyond the two technical documents","Simple temporal trigger (100 hours time in service from fixed date, then recurring)"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it as a recall notice for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of **Cessna 310 series aeroplanes** to inspect the wing tip fuel tanks for fuel leaks (\"seepage\"). The inspection specifically targets planes that have **strobe lights installed in the nose cap of the wing tip fuel tank** — this is where the problem occurs.\n\n**Who must comply:** Anyone operating a Cessna 310 with this specific strobe light configuration.\n\n**What must be done:**\n- **First inspection:** Within 100 hours of flying time after 30 April 1975\n- **Ongoing inspections:** Every 100 hours of flying time thereafter\n\n**Why it matters:** Fuel leaking near electrical equipment (strobe lights) creates a fire and explosion risk. This AD forces regular checks to catch leaks before they become dangerous.\n\n**Technical references:** The directive points to two documents for how to do the inspection properly:\n- Cessna Service Letter ME73-4, or\n- FAA Airworthiness Directive 75-05-08 (the US equivalent)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-310-37-tip-tank-fuel-seepage-inspection","history":"/api/acts/ad-cessna-310-37-tip-tank-fuel-seepage-inspection/history","analysis":"/api/acts/ad-cessna-310-37-tip-tank-fuel-seepage-inspection/analysis","conflicts":"/api/acts/ad-cessna-310-37-tip-tank-fuel-seepage-inspection/conflicts","importantCases":"/api/acts/ad-cessna-310-37-tip-tank-fuel-seepage-inspection/important-cases","documents":"/api/acts/ad-cessna-310-37-tip-tank-fuel-seepage-inspection/documents"}}