{"id":"F2009L01846","name":"AD/B-2/24 - Rudder Control Post Upper Attachment - Modification - CANCELLED","slug":"ad-b-2-24-rudder-control-post-upper-attachment-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78857,"registerId":"commonwealth-F2009L01846-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Brantly B-2 Series Helicopters","sectionType":"division","heading":"Brantly B-2 Series Helicopters","content":"### Brantly B-2 Series Helicopters\n\n| AD/B-2/24 | Rudder Control Post UpperAttachment - Modification | 6/2009 |\n| --------- | -------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                      |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 4 June 2009.                                                                                                                                                                                                                                            |\n| Background:  | This AD, issued in 1965, required replacement of the aluminium rudder control posts upper attachment brackets in accordance with Brantly SB No.19 with steel brackets. The AD compliance was forthwith. As all aircraft would have been modified, the AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n17 April 2009","sortOrder":0},{"sectionNumber":"AD/B-2/24","sectionType":"part","heading":"AD/B-2/24","content":"## AD/B-2/24","sortOrder":1},{"sectionNumber":"Rudder Control Post UpperAttachment - Mo","sectionType":"part","heading":"Rudder Control Post UpperAttachment - Modification","content":"## Rudder Control Post Upper  \nAttachment - Modification","sortOrder":2},{"sectionNumber":"6/2009","sectionType":"part","heading":"6/2009","content":"## 6/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1102},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the airworthiness directive entirely rather than altering its scope. The cancellation reflects completion of the original safety mandate (full fleet modification) rather than an expansion or restriction of the directive's original application to Brantly B-2 helicopter rudder brackets."},"complexity_factors":["Single operative word: 'CANCELLED'","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Background text is explanatory only and imposes no legal duties","Cross-reference limited to historical context (Brantly SB No.19)"],"plain_english_summary":"This document **cancels** an old helicopter safety rule (Airworthiness Directive AD/B-2/24) that has been in place since 1965.\n\n**What it used to require:**\nThe original directive required owners of **Brantly B-2 series helicopters** to replace the aluminium upper attachment brackets on the rudder control posts with stronger steel brackets (following manufacturer's Service Bulletin No. 19). Compliance was required immediately (\"forthwith\").\n\n**Why it's being cancelled:**\nBecause the compliance was immediate and the directive is 44 years old, the regulator (Civil Aviation Safety Authority) assumes all affected helicopters have already been modified. Since the safety fix has been applied to the entire fleet, the rule is no longer needed.\n\n**Key details:**\n*   **Effective date of cancellation:** 4 June 2009\n*   **Issued by:** CASA Delegate David Villiers (17 April 2009)\n*   **Current status:** This directive no longer imposes any legal obligations on aircraft owners or operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b-2-24-rudder-control-post-upper-attachment-modification-cancelled","history":"/api/acts/ad-b-2-24-rudder-control-post-upper-attachment-modification-cancelled/history","analysis":"/api/acts/ad-b-2-24-rudder-control-post-upper-attachment-modification-cancelled/analysis","conflicts":"/api/acts/ad-b-2-24-rudder-control-post-upper-attachment-modification-cancelled/conflicts","importantCases":"/api/acts/ad-b-2-24-rudder-control-post-upper-attachment-modification-cancelled/important-cases","documents":"/api/acts/ad-b-2-24-rudder-control-post-upper-attachment-modification-cancelled/documents"}}