{"id":"F2006B04856","name":"AD/CAP 232/4 - Engine Mount","slug":"ad-cap-232-4-engine-mount","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44663,"registerId":"commonwealth-F2006B04856-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \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 CAR 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\nCAP Aviation (Akrotech and Mudry) CAP 232 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/CAP 232/4 Engine Mount 7/2001 DM","sectionType":"part","heading":"AD/CAP 232/4 Engine Mount 7/2001 DM","content":"# AD/CAP 232/4 Engine Mount 7/2001 DM\n\nApplicability: All CAP 232, CAP 231, and CAP 231EX aircraft.\n\nRequirement: Inspect in accordance with CAP Aviation Service Bulletin No. 1 Revision 3, dated 15 September 2000.\n\nNote: DGAC AD 2001-051(A) refers.\n\nCompliance: Within the first 100 aerobatic flight hours on the engine mount.\n\nFor aircraft that have accumulated more than 100 flight hours on the engine mount; within 5 aerobatic flight hours on the engine mount after 23 May 2001.\n\nRepeat thereafter at intervals not to exceed 10 aerobatic flights. This Airworthiness Directive becomes effective on 23 May 2001.\n\nBackground: The DGAC requires mandatory compliance of an inspection program for the engine mount.\n\n![](image.002.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 16 May 2001\n\n![](image.001.png)","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with narrow, specific scope targeting a known safety issue in particular aircraft models. It has not expanded beyond its original purpose of mandating engine mount inspections."},"complexity_factors":["Single, clearly defined applicability (three specific aircraft models)","One straightforward requirement referencing an external technical document","Simple two-tier compliance schedule based on flight hours accumulated","No defined terms section, no cross-referencing to other legislation beyond a single note","Minimal conditional logic (only distinguishing between aircraft above/below 100 flight hours)","Short document (approximately 200 words of substantive content)"],"plain_english_summary":"Owners and operators of CAP 232, CAP 231 and CAP 231EX aerobatic aeroplanes must inspect the engine mount per CAP Aviation Service Bulletin No. 1 Rev. 3. CASA requires this to catch a DGAC-identified unsafe condition that could lead to engine failure or separation during high‑stress manoeuvres. Initial and recurring inspection intervals are specified to ensure continued airworthiness."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD implements the inspection programme described by the DGAC and applies to all listed CAP 232/231 models without expanding or narrowing that applicability. It does not add new aircraft types or new obligations beyond mandating inspections to the timetable and method specified (see Applicability, Requirement, Compliance, Background)."},"complexity_factors":["Narrow applicability limited to CAP 232, CAP 231 and CAP 231EX aircraft (Applicability).","Technical steps are contained in an external document — CAP Aviation Service Bulletin No. 1 Rev 3 (Requirement) — creating a dependence on that bulletin for execution.","Timing rules include conditional initial deadlines (within 100 aerobatic flight hours or within 5 aerobatic hours after 23 May 2001 if already beyond 100) and a recurring interval tied to aerobatic flights (Compliance).","Authority and legal force derive from CASA delegate action under CAR 1998 subregulation 39.1(1) (preamble and signature block).","Reference to a foreign authority’s directive (DGAC AD 2001-051(A) / Background and Note) introduces cross-jurisdictional linkage to the requirement."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of CAP 232, CAP 231 and CAP 231EX aeroplanes to carry out engine‑mount inspections in accordance with CAP Aviation Service Bulletin No. 1 Revision 3 (15 Sept 2000). It prescribes initial timing (within the first 100 aerobatic flight hours on the mount, or within 5 aerobatic flight hours after 23 May 2001 if already past 100) and repeats at intervals no greater than every 10 aerobatic flights. CASA issued the AD under CAR 1998 subreg 39.1(1); operators pay for and schedule the inspections."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cap-232-4-engine-mount","history":"/api/acts/ad-cap-232-4-engine-mount/history","analysis":"/api/acts/ad-cap-232-4-engine-mount/analysis","conflicts":"/api/acts/ad-cap-232-4-engine-mount/conflicts","importantCases":"/api/acts/ad-cap-232-4-engine-mount/important-cases","documents":"/api/acts/ad-cap-232-4-engine-mount/documents"}}