{"id":"F2006B07029","name":"AD/SKY ARROW/2 - Engine Mount","slug":"ad-sky-arrow-2-engine-mount","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48724,"registerId":"commonwealth-F2006B07029-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\nIniziative Industriali Italiane Sky Arrow 650 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/SKY ARROW/2 Engine Mount 2/2003 DM","sectionType":"part","heading":"AD/SKY ARROW/2 Engine Mount 2/2003 DM","content":"# AD/SKY ARROW/2 Engine Mount 2/2003 DM\n\nApplicability: All Model 650TC, 650TCN, 650TCS, and 650TCNS aircraft.\n\nRequirement: Inspect and modify in accordance with Iniziative Industriali Italiane Service Bulletin No. SB-C 01/02, dated 15 October 2002.\n\nNote: ENAC AD 2002-590 refers.\n\nComp liance: Inspect within 10 hours time in service after 18 December 2002, unless already accomplished. Thereafter at each scheduled 100 hour maintenance inspection, until the required modification is accomplished.\n\nIf cracks are detected, accomplish the modification before further flight. Modify before 31 December 2003.\n\nThis Airworthiness Directive becomes effective on 18 December 2002.\n\nBackground: The manufacturer received reports of crack initiation on the engine mount of aircraft with high operating time on grass airfields and training school aircraft affected by hard landings.\n\n![Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority](image.002.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 12 December 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 18 December 2002.","sortOrder":1}],"analysis":{"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive implements inspections and a mandated modification to address reported engine-mount crack initiation for the listed Sky Arrow 650 models. The AD's applicability, required actions (inspect/modify per SB-C 01/02), and compliance deadlines are stated in the text and do not indicate any expansion or narrowing of scope beyond that purpose."},"complexity_factors":["Narrow applicability (specific Sky Arrow 650 variants) reduces stakeholder complexity.","Mandates reference an external manufacturer Service Bulletin (SB-C 01/02) — compliance requires consulting that document.","Time-sensitive compliance windows (inspect within 10 hours TIS, recurring 100‑hour inspections, modify by 31 Dec 2003) create operational scheduling pressure.","Immediate grounding trigger if cracks detected (modify before further flight) increases potential disruption.","Regulatory authority delegated to CASA delegate; enforcement and interpretation discretion rests with the regulator."],"plain_english_summary":"Requires owners/operators of Sky Arrow 650TC/TCN/TC S/TCNS aeroplanes to inspect and modify the engine mount per Iniziative Industriali Italiane Service Bulletin SB-C 01/02 because of reported crack initiation from grass operations and hard landings. The Civil Aviation Safety Authority delegate set inspection and modification deadlines and compliance steps, effective 18 December 2002. Operators pay for inspections and any modification; inspections must occur within 10 hours TIS after 18 Dec 2002, at each 100‑hour check until modified, and modification is required before further flight if cracks are found and by 31 Dec 2003."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific mechanical defect (engine mount cracking) in a specific aircraft type. The background clearly links the requirement to the reported safety issue, with no evidence of scope creep or expansion beyond the original safety purpose."},"complexity_factors":["Single, clearly defined applicability (4 specific aircraft models)","Straightforward two-part requirement: inspect first, then modify","Simple conditional logic (only one condition: 'if cracks are detected')","Clear, unambiguous compliance dates and flight hour thresholds","No defined terms section, no cross-references to other legislation beyond a single reference to an Italian service bulletin","Total length: approximately 250 words","Single regulatory instrument (Airworthiness Directive) with standardised CASA format"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators and maintenance engineers of Sky Arrow 650 series aircraft to inspect the engine mount for cracks, ground any aircraft with detected cracking until repaired, and ultimately modify the mounts to correct the design flaw.  \n\nInspections must begin shortly after 18 December 2002 (initial 10 flight‑hour check, then every 100 hours) with a mandatory modification completion date of 31 December 2003 to prevent possible in‑flight engine separation."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sky-arrow-2-engine-mount","history":"/api/acts/ad-sky-arrow-2-engine-mount/history","analysis":"/api/acts/ad-sky-arrow-2-engine-mount/analysis","conflicts":"/api/acts/ad-sky-arrow-2-engine-mount/conflicts","importantCases":"/api/acts/ad-sky-arrow-2-engine-mount/important-cases","documents":"/api/acts/ad-sky-arrow-2-engine-mount/documents"}}