{"id":"F2007L02677","name":"AD/BO 105/20 - Rescue Hoist Cable","slug":"ad-bo-105-20-rescue-hoist-cable","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":68553,"registerId":"commonwealth-F2007L02677-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter BO 105 Series Helicopters","sectionType":"division","heading":"Eurocopter BO 105 Series Helicopters","content":"### Eurocopter BO 105 Series Helicopters\n\n| AD/BO 105/20 | Rescue Hoist Cable | 10/2007 |\n| ------------ | ------------------ | ------- |\n\n| Applicability: | All Messerschmitt-Bolkow Blohm (MBB) Model BO 105 helicopters, equipped with a rescue hoist part number 0134-0353, 0136-1175, or 105-81101.               |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the requirements of LBA AD 82-99.Note: MBB Alert Bulletin No. 21 refers.                                                        |\n| Compliance:    | As specified in the requirement document.                                                                                                                 |\n|                | This Airworthiness Directive becomes effective on 27 September 2007.                                                                                      |\n| Background:    | A rescue hoist cable failure occurred due to damage during a previous operation. This Directive requires an inspection after each rescue hoist operation. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n13 August 2007","sortOrder":0},{"sectionNumber":"AD/BO 105/20","sectionType":"part","heading":"AD/BO 105/20","content":"## AD/BO 105/20","sortOrder":1},{"sectionNumber":"Rescue Hoist Cable","sectionType":"part","heading":"Rescue Hoist Cable","content":"## Rescue Hoist Cable","sortOrder":2},{"sectionNumber":"10/2007","sectionType":"part","heading":"10/2007","content":"## 10/2007","sortOrder":3}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical failure mode. The scope remains precisely limited to the identified cable failure risk on specific helicopter models, with no evidence of scope creep beyond the original safety purpose."},"complexity_factors":["Very short document (under 200 words)","Only 3 specific part numbers in scope","Single requirement: inspect after each operation","No defined terms section","No nested conditions or exceptions","Cross-reference to only one external document (LBA AD 82-99) for technical details","Straightforward compliance trigger (post-operation inspection)"],"plain_english_summary":"This CASA Airworthiness Directive requires operators of Eurocopter BO 105 helicopters fitted with specified rescue hoists to inspect the hoist cable after every rescue operation, following the procedures in LBA AD 82‑99. It applies to emergency services, SAR organisations and any operator using these winches.\n\nIt responds to a cable failure caused by undetected damage; because hoist cables are life‑critical, immediate post‑use checks aim to catch damage before the next mission."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The Directive does not widen the fleet or introduce new modifications; it aligns domestic requirements with LBA AD 82‑99 and MBB Alert Bulletin No.21 by imposing a recurring inspection after each rescue‑hoist operation in response to a prior cable failure. It therefore implements a targeted operational inspection requirement rather than changing which aircraft are covered or adding new equipment obligations."},"complexity_factors":["Narrow applicability: limited to MBB BO 105 helicopters fitted with three specific hoist part numbers (reduces scope).","Operational recurrence: inspection required after every rescue‑hoist operation creates ongoing operational and maintenance burden.","External dependency: requires compliant action in accordance with LBA AD 82‑99 and references MBB Alert Bulletin No.21, so operators must consult and follow an external directive.","Compliance clarity: AD specifies inspection obligation and effective date but relies on the referenced documents for technical steps, increasing the need to retrieve and interpret those materials.","Enforcement and cost allocation: CASA enforces the AD; costs for inspections, repairs and any replacements fall to operators/owners (stated in Requirement/Compliance)."],"plain_english_summary":"This Airworthiness Directive requires operators of MBB (Messerschmitt‑Bolkow‑Blohm) BO 105 helicopters fitted with rescue hoists (parts 0134‑0353, 0136‑1175, 105‑81101) to inspect the rescue‑hoist cable after every rescue‑hoist operation, following the procedures in LBA AD 82‑99 (MBB Alert Bulletin No.21). It takes effect 27 September 2007. Operators/owners bear inspection, repair and replacement costs and must incorporate a recurring operational inspection into procedures; the Civil Aviation Safety Authority enforces compliance (Applicability; Requirement; Effective date)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bo-105-20-rescue-hoist-cable","history":"/api/acts/ad-bo-105-20-rescue-hoist-cable/history","analysis":"/api/acts/ad-bo-105-20-rescue-hoist-cable/analysis","conflicts":"/api/acts/ad-bo-105-20-rescue-hoist-cable/conflicts","importantCases":"/api/acts/ad-bo-105-20-rescue-hoist-cable/important-cases","documents":"/api/acts/ad-bo-105-20-rescue-hoist-cable/documents"}}