{"id":"F2006B04847","name":"AD/CAP 10/5 - Front Tank Support Strap","slug":"ad-cap-10-5-front-tank-support-strap","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44654,"registerId":"commonwealth-F2006B04847-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)  \n\nAvions Mudry Cap Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/CAP 10/5 Front Tank Support Strap 7/2","sectionType":"part","heading":"AD/CAP 10/5 Front Tank Support Strap 7/2004","content":"# AD/CAP 10/5 Front Tank Support Strap 7/2004\n\nApplicability: All Model CAP 10B aircraft.\n\nRequirement: Retire the front tank support strap from service in accordance with Apex Aircraft Service Bulletin No. 040102, dated 10 May 2004.\n\nNote: DGAC AD 2004-071 refers.\n\nCompliance: As specified in the Requirement document, with a revised effective date of 8 July 2004.\n\nThis Airworthiness Directive becomes effective on 8 July 2004.\n\nBackground: A failure of a front tank support strap occurred on a CAP 10B aircraft, and in response a life limit of 4,000 flight hours has been imposed.\n\n![](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 28 May 2004\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 16 June 2004.","sortOrder":1}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1906},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is the original issuance of the directive. The scope remains precisely targeted at the specific safety defect (front tank support strap failure) in the CAP 10B aircraft model as originally identified, with no expansion to other models or components."},"complexity_factors":["Single aircraft model specified in applicability (CAP 10B only)","One specific mechanical component affected","Straightforward action: retire part after 4,000 flight hours","Incorporates by reference only one external technical document (Service Bulletin No. 040102)","No conditional exceptions, nested logic, or defined terms section","Short, single-page instrument with minimal cross-referencing"],"plain_english_summary":"**What this is:** A mandatory safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) for specific aerobatic aircraft.\n\n**Who it affects:** Owners and operators of **CAP 10B model aircraft** (French-built aerobatic planes).\n\n**What it requires:** You must permanently remove from service (\"retire\") the **front tank support strap** — a metal strap that secures the fuel tank — once the aircraft accumulates **4,000 flight hours** on that part. You must follow the specific technical instructions in **Apex Aircraft Service Bulletin No. 040102** (dated 10 May 2004).\n\n**Why it matters:** A front tank support strap failed on a CAP 10B aircraft, creating a dangerous condition (risk of fuel tank movement or detachment). CASA imposed a strict \"life limit\" to prevent catastrophic failures.\n\n**When:** The directive took effect on **8 July 2004**."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cap-10-5-front-tank-support-strap","history":"/api/acts/ad-cap-10-5-front-tank-support-strap/history","analysis":"/api/acts/ad-cap-10-5-front-tank-support-strap/analysis","conflicts":"/api/acts/ad-cap-10-5-front-tank-support-strap/conflicts","importantCases":"/api/acts/ad-cap-10-5-front-tank-support-strap/important-cases","documents":"/api/acts/ad-cap-10-5-front-tank-support-strap/documents"}}