{"id":"F2006B02606","name":"AD/B-2/5 - Tail Cone Reinforcement","slug":"ad-b-2-5-tail-cone-reinforcement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41909,"registerId":"commonwealth-F2006B02606-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B-2/5 - Tail Cone Reinforcement","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)  Brantly B-2 Series Helicopters\n\n \n\nAD/B-2/5 Tail Cone Reinforcement 12/60\n\nApplicability: All model B-2 prior to S/No. 45. Document: Brantly SB No. 5.\n\nCompliance: Forthwith.\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\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1620},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted airworthiness directive addressing a specific structural defect in early production Brantly B-2 helicopters. The scope remains precisely limited to the identified safety issue and the specified aircraft serial number range, with no indication of expansion beyond the original technical intent."},"complexity_factors":["Extremely brief operative text (approximately 5 lines of substance)","Single, clear applicability criterion (serial number threshold)","No conditional logic, exceptions, or nested provisions","References only one external technical document for implementation details","Immediate compliance requirement with no phased or alternative compliance methods specified"],"plain_english_summary":"**What it is:** An urgent safety order requiring immediate structural reinforcement of the tail section on specific helicopters.\n\n**Who it affects:** Owners and operators of **Brantly B-2 helicopters with serial numbers below 45** (early production models).\n\n**What it requires:** You must immediately reinforce the tail cone (the rear structural section of the helicopter) by following the technical instructions in **Brantly Service Bulletin No. 5**.\n\n**Why it matters:** This directive addresses a critical structural weakness that could cause the tail cone to fail during flight, potentially leading to catastrophic loss of control. The compliance term **\"forthwith\"** means this work must be completed before the next flight — there is no grace period or extension available."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b-2-5-tail-cone-reinforcement","history":"/api/acts/ad-b-2-5-tail-cone-reinforcement/history","analysis":"/api/acts/ad-b-2-5-tail-cone-reinforcement/analysis","conflicts":"/api/acts/ad-b-2-5-tail-cone-reinforcement/conflicts","importantCases":"/api/acts/ad-b-2-5-tail-cone-reinforcement/important-cases","documents":"/api/acts/ad-b-2-5-tail-cone-reinforcement/documents"}}