{"id":"F2009L01850","name":"AD/B-2/8 - Tail Cone Reinforcement - CANCELLED","slug":"ad-b-2-8-tail-cone-reinforcement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78866,"registerId":"commonwealth-F2009L01850-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Brantly B-2 Series Helicopters","sectionType":"division","heading":"Brantly B-2 Series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-2/8 | Tail Cone Reinforcement | 6/2009 |\n| -------- | ----------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                           |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 4 June 2009.                                                                                                                                                                                                                                                 |\n| Background:  | This AD, issued in 1960, required modification of the tail cone in accordance with Brantly SB No. 3A to provide better distribution of stabiliser loads into the tail cone. 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-2/8","sectionType":"part","heading":"AD/B-2/8","content":"## AD/B-2/8","sortOrder":1},{"sectionNumber":"Tail Cone Reinforcement","sectionType":"part","heading":"Tail Cone Reinforcement","content":"## Tail Cone Reinforcement","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":1804},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument eliminates the regulatory requirement entirely rather than expanding, restricting, or altering the original scope of the 1960 directive."},"complexity_factors":["Single operative provision (cancellation of prior instrument)","No defined terms, interpretation section, or legislative cross-references","Extremely short (approximately 80 words of substantive text)","No conditional logic, exceptions, or procedural requirements"],"plain_english_summary":"**What this document does**\n\nThis cancels an old safety rule (**Airworthiness Directive B-2/8**) that required owners of Brantly B-2 series helicopters to strengthen the aircraft's tail section.\n\n**Background**\n\nThe original rule was issued in 1960 and required immediate modification of the tail cone to better distribute loads from the stabiliser (the part that keeps the helicopter steady). Owners had to follow the manufacturer's Service Bulletin No. 3A to make the changes.\n\n**Why it's being cancelled**\n\nBecause the rule required compliance \"forthwith\" (immediately) back in 1960, regulators assume every affected helicopter has already been modified. Since the work is effectively universal, the rule is no longer needed.\n\n**What this means**\n\nIf you own or operate a Brantly B-2 helicopter, you no longer need to track or comply with this specific directive. The cancellation took effect on **4 June 2009**."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b-2-8-tail-cone-reinforcement-cancelled","history":"/api/acts/ad-b-2-8-tail-cone-reinforcement-cancelled/history","analysis":"/api/acts/ad-b-2-8-tail-cone-reinforcement-cancelled/analysis","conflicts":"/api/acts/ad-b-2-8-tail-cone-reinforcement-cancelled/conflicts","importantCases":"/api/acts/ad-b-2-8-tail-cone-reinforcement-cancelled/important-cases","documents":"/api/acts/ad-b-2-8-tail-cone-reinforcement-cancelled/documents"}}