{"id":"F2006B08201","name":"AD/CESSNA 320/22 - Tip Tank Fuel Seepage - Inspection","slug":"ad-cessna-320-22-tip-tank-fuel-seepage-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115412,"registerId":"commonwealth-F2006B08201-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 320/22 - 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 320 Series Aeroplanes\n\n \n\nAD/CESSNA 320/22 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":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1975 addressing a specific safety defect. It has not expanded beyond its original purpose of mandating fuel seepage inspections for a particular aircraft configuration."},"complexity_factors":["Extremely short document (approximately 150 words)","Only 4 operative provisions: applicability, document references, compliance timing, and recurring interval","No defined terms section","No cross-references to other legislation beyond two external technical documents","Simple conditional logic: single applicability criterion (strobe lights in wing tip tank nose cap)","No exceptions, exemptions, or nested conditions"],"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 compulsory \"recall notice\" for aircraft.\n\n**What it does:** It requires owners and operators of **Cessna 320 series aeroplanes** to inspect the wing tip fuel tanks for fuel seepage (slow leaks). The inspection specifically targets aircraft fitted with **strobe lights in the wing tip fuel tank nose cap**.\n\n**Who must comply:** Anyone operating a Cessna 320 model with this specific strobe light configuration.\n\n**What must be done:**\n- **Initial 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 seepage near electrical equipment (strobe lights) creates fire and explosion risks. This AD mandates regular checks to catch leaks before they become dangerous.\n\n**Technical references:** Operators can follow either Cessna Service Letter ME73-4 or the equivalent US Federal Aviation Administration AD 75-05-08 to complete the inspection."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The text sets a targeted inspection requirement for a specific equipment fitment on Cessna 320 series aeroplanes and prescribes a recurring 100-hour inspection interval referencing two external documents. The provided material contains no indication that the directive’s applicability or substantive requirements have been altered from its stated terms; therefore there is no evidence in the text that the scope has changed."},"complexity_factors":["Narrow technical scope limited to Cessna 320 series with a specific equipment fitment (strobe in wing tip tank nose cap)","Simple, fixed compliance interval (100 hours time in service) with a clear initial due date","Reliance on external referenced documents (Cessna SL ME73-4 or FAA AD 75-05-08) for procedural detail adds a minor extra step to compliance","No detailed enforcement, exemption, or administrative-discretion provisions in the text provided, reducing procedural complexity but leaving implementation details to regulators/operators"],"plain_english_summary":"This directive requires owners/operators and maintenance providers of Cessna 320 series aeroplanes fitted with a strobe in the wing-tip tank nose cap to inspect that area (per the cited Cessna/FAA procedures) within 100 hours after 30 April 1975 and thereafter every 100 hours. It’s intended to detect fuel seepage, creating a recurring compliance cost and operational constraint (or an incentive to avoid/ remove the strobe fitment)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-320-22-tip-tank-fuel-seepage-inspection","history":"/api/acts/ad-cessna-320-22-tip-tank-fuel-seepage-inspection/history","analysis":"/api/acts/ad-cessna-320-22-tip-tank-fuel-seepage-inspection/analysis","conflicts":"/api/acts/ad-cessna-320-22-tip-tank-fuel-seepage-inspection/conflicts","importantCases":"/api/acts/ad-cessna-320-22-tip-tank-fuel-seepage-inspection/important-cases","documents":"/api/acts/ad-cessna-320-22-tip-tank-fuel-seepage-inspection/documents"}}