{"id":"F2006B02473","name":"AD/AS 355/17 - Securaiglon (Ex Laiglon) Safety Belts - Modification","slug":"ad-as-355-17-securaiglon-ex-laiglon-safety-belts-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41729,"registerId":"commonwealth-F2006B02473-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AS 355/17 - Securaiglon (Ex Laiglon) Safety Belts - Modification","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)  Eurocopter AS 355 (Twin Ecureuil) Series Helicopters\n\n \n\nAD/AS 355/17  Securaiglon (Ex L’aiglon) Safety Belts - Modification\n\n\n9/84\n\n \n\nApplicability: All model AS 355 equipped with passenger seat belts identified in Paragraph 1 of Service Bulletin TRW No. 01.\n\n \n\nRequirement: Aerospatiale SB No. 01.11 and TRW RAPA SA S.B. No. 01. Compliance:  Modify prior to 31 January 1985.\n\nBackground:  The manufacturer reports instances where the buckle had jammed in the locked position.\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":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1155},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains a tightly focused scope limited to correcting a specific mechanical defect (jamming buckles) in specific seat belt models installed in specific aircraft. There is no evidence of scope creep or expansion beyond the original safety purpose."},"complexity_factors":["Very narrow applicability limited to a single helicopter model series (AS 355)","Only one specific action required (modification per listed service bulletins)","No exceptions, exemptions, or conditional logic","Clear, absolute deadline for compliance","Minimal cross-referencing (only two named service bulletins)"],"plain_english_summary":"**What this does:** This is a mandatory safety rule (called an Airworthiness Directive) that requires helicopter operators to fix a dangerous fault in passenger seat belts.\n\n**Who it affects:** Anyone operating **Eurocopter AS 355 (Twin Ecureuil) helicopters** that have **Securaiglon passenger seat belts** (specifically those identified in Service Bulletin TRW No. 01).\n\n**What must be done:** Operators must modify the seat belts according to two technical instructions:\n* Aerospatiale Service Bulletin No. 01.11\n* TRW RAPA SA Service Bulletin No. 01\n\n**The deadline:** The modification had to be completed before **31 January 1985**.\n\n**Why this matters:** The manufacturer discovered that the seat belt buckles could jam in the locked position. This created a serious safety risk because passengers could become trapped in their seats during an emergency evacuation."}},"importantCases":[],"_links":{"self":"/api/acts/ad-as-355-17-securaiglon-ex-laiglon-safety-belts-modification","history":"/api/acts/ad-as-355-17-securaiglon-ex-laiglon-safety-belts-modification/history","analysis":"/api/acts/ad-as-355-17-securaiglon-ex-laiglon-safety-belts-modification/analysis","conflicts":"/api/acts/ad-as-355-17-securaiglon-ex-laiglon-safety-belts-modification/conflicts","importantCases":"/api/acts/ad-as-355-17-securaiglon-ex-laiglon-safety-belts-modification/important-cases","documents":"/api/acts/ad-as-355-17-securaiglon-ex-laiglon-safety-belts-modification/documents"}}