{"id":"F2006B03850","name":"AD/BEECH 35/54 - Hatshelf Soundproofing Blanket","slug":"ad-beech-35-54-hatshelf-soundproofing-blanket","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43459,"registerId":"commonwealth-F2006B03850-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 35/54 - Hatshelf Soundproofing Blanket","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)  Beechcraft 35 (Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 35/54 Hatshelf Soundproofing Blanket 3/79\n\nApplicability: All models S35, V35, V35TC, V35A, V35A-TC, V35B and V35B-TC with S/Nos.\n\nD-7310 to D-9537.\n\n \n\nRequirement: Action in accordance with Beechcraft SI No. 0694-311, Rev. 1. Compliance:  At intervals not exceeding 100 hours time in service.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1977},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope addressing specific maintenance of the hatshelf soundproofing blanket on defined aircraft models. There is no evidence of expansion beyond the original aviation safety purpose."},"complexity_factors":["External reference to manufacturer service instruction without reproducing substantive content","Narrow applicability limited to specific serial number range","Single recurring compliance interval (100 hours time in service)","No defined terms, exceptions, or conditional logic"],"plain_english_summary":"This Airworthiness Directive (AD) is a safety order requiring owners of specific Beechcraft Bonanza aircraft to regularly maintain the soundproofing material located behind the passenger seats.\n\n**Who it affects:** Owners and operators of specific Beechcraft 35 series models (S35, V35, V35TC, V35A, V35A-TC, V35B, and V35B-TC) with serial numbers between D-7310 and D-9537.\n\n**What must be done:** Follow the maintenance steps outlined in Beechcraft Service Instruction No. 0694-311, Revision 1, regarding the \"hatshelf soundproofing blanket\" (insulation material on the shelf behind the seats).\n\n**How often:** Every 100 hours of flight time (\"time in service\").\n\n**Why it matters:** To ensure the soundproofing material remains airworthy and doesn't create safety hazards in the aircraft cabin, such as fire risks or interference with aircraft systems."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-35-54-hatshelf-soundproofing-blanket","history":"/api/acts/ad-beech-35-54-hatshelf-soundproofing-blanket/history","analysis":"/api/acts/ad-beech-35-54-hatshelf-soundproofing-blanket/analysis","conflicts":"/api/acts/ad-beech-35-54-hatshelf-soundproofing-blanket/conflicts","importantCases":"/api/acts/ad-beech-35-54-hatshelf-soundproofing-blanket/important-cases","documents":"/api/acts/ad-beech-35-54-hatshelf-soundproofing-blanket/documents"}}