{"id":"F2006B09383","name":"AD/ECUREUIL/8 Amdt 1 - Starflex Star to Main Rotor Shaft Securing Bolts","slug":"ad-ecureuil-8-amdt-1-starflex-star-to-main-rotor-shaft-securing-bolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53693,"registerId":"commonwealth-F2006B09383-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ECUREUIL/8 Amdt 1 - Starflex Star to Main Rotor Shaft Securing Bolts","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nEurocopter AS 350 (Ecureuil) Series Helicopters\n\nAD/ECUREUIL/8\n\nAmdt 1\n\n  \n\nStarflex Star to Main Rotor Shaft Securing Bolts\n\n  \n3/88\n\nApplicability: All model AS 350 helicopters.\n\nRequirement: Action in accordance with Aerospatiale AS 350 SB No 05.04 Revision 1.\n\nNote: Bureau Veritas Directive 80-184-015(B) R1 refers.\n\nCompliance: 1. For aircraft which have achieved 590 hours time in service \\- within 10 hours time in service after 30 October 1980.\n\n    2. For aircraft which have achieved 300 hours time in service \\- upon achieving 600 hours time in service.\n\n    3. For all aircraft \\- at each subsequent 400 hours time in service after initial inspection in accordance with 1 and 2.\n\nBackground: Several cases of fretting corrosion, which can cause cracking, have resulted from loose Starflex star to main rotor shaft securing bolts. The 300 hourly repetitive inspection period has been extended to 400 hours by the manufacturer.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":817},"content_quality":"ok","complexity_score":2,"rejection_reason":"","scope_assessment":{"changed":true,"description":"This amendment (Amdt 1) extends the repetitive inspection interval from 300 hours to 400 hours time in service, as noted in the background section. The original directive required inspections every 300 hours; this version relaxes that requirement to align with manufacturer updates."},"complexity_factors":["Three-tier conditional compliance structure based on aircraft flight hours","Reference to external technical documents (Aerospatiale Service Bulletin 05.04, Bureau Veritas Directive)","Technical aviation terminology requiring domain knowledge (fretting corrosion, Starflex star, time in service)"],"plain_english_summary":"**What this does:** This is a mandatory safety inspection rule for certain helicopters. It requires operators of Eurocopter AS 350 (Ecureuil) helicopters to inspect critical bolts that hold the main rotor to the shaft.\n\n**Why it matters:** Loose bolts on the \"Starflex star\" (a component connecting the rotor blades to the main shaft) can cause **fretting corrosion** (wear damage from rubbing) and cracking. If these bolts fail, the rotor could detach in flight.\n\n**What must be done:**\n- **High-time aircraft** (590+ flight hours): Inspect within 10 hours after 30 October 1980\n- **Mid-time aircraft** (300 flight hours): Inspect when reaching 600 total flight hours  \n- **All aircraft:** Repeat the inspection every 400 flight hours thereafter\n\n**Who it affects:** Anyone operating AS 350 model helicopters in Australia."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-8-amdt-1-starflex-star-to-main-rotor-shaft-securing-bolts","history":"/api/acts/ad-ecureuil-8-amdt-1-starflex-star-to-main-rotor-shaft-securing-bolts/history","analysis":"/api/acts/ad-ecureuil-8-amdt-1-starflex-star-to-main-rotor-shaft-securing-bolts/analysis","conflicts":"/api/acts/ad-ecureuil-8-amdt-1-starflex-star-to-main-rotor-shaft-securing-bolts/conflicts","importantCases":"/api/acts/ad-ecureuil-8-amdt-1-starflex-star-to-main-rotor-shaft-securing-bolts/important-cases","documents":"/api/acts/ad-ecureuil-8-amdt-1-starflex-star-to-main-rotor-shaft-securing-bolts/documents"}}