{"id":"F2007L02674","name":"AD/BO 105/24 - Main Rotor Pitch Link Rod Ends","slug":"ad-bo-105-24-main-rotor-pitch-link-rod-ends","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":68543,"registerId":"commonwealth-F2007L02674-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 105/24 | Main Rotor Pitch Link Rod Ends | 10/2007 |\n| ------------ | ------------------------------ | ------- |\n\n| Applicability: | All Messerschmitt-Bolkow Blohm (MBB) Model BO 105 helicopters.                                                                                          |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the requirements of Transport Canada AD CF-88-07R2.Note: MBB Alert Service Bulletins BO 105LS-10-103 and BO 105-10-103 refer. |\n| Compliance:    | As specified in the Requirement document, with a revised effective date of27 September 2007.                                                            |\n|                | This Airworthiness Directive becomes effective on 27 September 2007.                                                                                    |\n| Background:    | Fatigue cracks have been found in the main rotor pitch link rod-ends. Failure of a rod-end could result in loss of control of the helicopter.           |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n13 August 2007","sortOrder":0},{"sectionNumber":"AD/BO 105/24","sectionType":"part","heading":"AD/BO 105/24","content":"## AD/BO 105/24","sortOrder":1},{"sectionNumber":"Main Rotor Pitch Link Rod Ends","sectionType":"part","heading":"Main Rotor Pitch Link Rod Ends","content":"## Main Rotor Pitch Link Rod Ends","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 standard, narrow airworthiness directive targeting a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (under 200 words of substantive text)","No defined terms section — uses plain technical language","Single cross-reference to external document (Transport Canada AD CF-88-07R2)","No conditional logic or nested exceptions","Straightforward applicability (all BO 105 helicopters)","Single compliance requirement with fixed effective date"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of MBB BO 105 helicopters in Australia to inspect and, where necessary, replace main rotor pitch link rod-ends because fatigue cracks have been found that could cause loss of control.  \n\nCASA adopts Transport Canada AD CF-88-07R2 and referenced manufacturer service bulletins for the inspection/maintenance requirements; the directive took effect 27 September 2007."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"The instrument adopts Transport Canada AD CF-88-07R2 and points to MBB Alert Service Bulletins; the document expressly revises the effective/compliance date to 27 September 2007 (Compliance). The applicability and substantive requirement (comply with the referenced AD) are unchanged in text, but the revised effective date alters when operators must comply."},"complexity_factors":["Cross-reference to an external mandatory document (Transport Canada AD CF-88-07R2) requires operators to consult and follow another jurisdiction's procedures (Requirement).","References to specific manufacturer Alert Service Bulletins increase document tracking and technical specificity (Requirement Note).","Universal applicability to 'all' MBB BO 105 helicopters creates wide operational impact and potential fleet-wide costs (Applicability).","Safety-critical hardware (main rotor pitch link rod-ends) raises urgency and inspection/repair rigor (Background).","Revised/effective date (27 September 2007) changes compliance timing, affecting maintenance scheduling (Compliance / Effective date).","Directive text delegates technical detail to referenced documents rather than listing procedures, increasing reliance on external documents for compliance scope (Requirement).","Enforcement by the Civil Aviation Safety Authority is signalled by the signed delegate notice, indicating regulatory oversight (signature/notice)."],"plain_english_summary":"This Airworthiness Directive requires operators of all Messerschmitt-Bolkow Blohm (MBB) BO 105 helicopters to carry out the inspections and corrective actions set out in Transport Canada AD CF-88-07R2 (with reference to MBB Alert Service Bulletins BO 105LS-10-103 and BO 105-10-103), effective 27 September 2007. It responds to discovered fatigue cracks in main rotor pitch link rod-ends; a rod-end failure could cause loss of control, so operators/owners bear the compliance cost and must schedule the mandated work."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bo-105-24-main-rotor-pitch-link-rod-ends","history":"/api/acts/ad-bo-105-24-main-rotor-pitch-link-rod-ends/history","analysis":"/api/acts/ad-bo-105-24-main-rotor-pitch-link-rod-ends/analysis","conflicts":"/api/acts/ad-bo-105-24-main-rotor-pitch-link-rod-ends/conflicts","importantCases":"/api/acts/ad-bo-105-24-main-rotor-pitch-link-rod-ends/important-cases","documents":"/api/acts/ad-bo-105-24-main-rotor-pitch-link-rod-ends/documents"}}