{"id":"F2006B04198","name":"AD/BEECH 77/8 - Horizontal Stabiliser Attach Bolts","slug":"ad-beech-77-8-horizontal-stabiliser-attach-bolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43954,"registerId":"commonwealth-F2006B04198-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 77/8 - Horizontal Stabiliser Attach Bolts","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 77 (Skipper) Series Aeroplanes\n\n \n\nAD/BEECH 77/8 Horizontal Stabiliser Attach Bolts 10/81\n\nApplicability: All model 77 with S/Nos. WA-1 to WA-7, WA-9 to WA-29, WA-31 to WA-39, WA- 41 to WA-51, WA-53 to WA-70, WA-72 to WA-79, WA-81 to WA-89 and WA-91 to WA-98.\n\n \n\nRequirement: Action in accordance with Beechcraft SI NO. 1193. Compliance:  Within 100 hours’ time in service after 31 October 1981.\n\nBackground:  The manufacturer has advised that the horizontal stabiliser attach bolts may have been incorrectly installed at initial assembly.\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":1868},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope, targeting a specific manufacturing defect identified by the manufacturer in specific aircraft serial numbers. It has not expanded beyond the original safety issue of incorrectly installed stabiliser bolts."},"complexity_factors":["Reference to external technical document (Beechcraft Service Instruction No. 1193) without reproducing the actual inspection/repair procedures","Specific serial number applicability requiring aircraft owners to cross-check their registration documents against the listed ranges","Use of technical aviation terminology ('time in service', 'horizontal stabiliser attach bolts')"],"plain_english_summary":"This mandatory Civil Aviation Safety Authority Airworthiness Directive requires owners/operators of specified Beechcraft Model 77 \"Skipper\" aircraft (serials WA‑1 through WA‑98 as listed) to follow Beechcraft Service Instruction No. 1193 to inspect the bolts attaching the horizontal stabiliser and correct any incorrectly installed bolts. It addresses a factory assembly error that could lead to tail separation in flight; actions must be done within 100 flight hours after 31 Oct 1981."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-77-8-horizontal-stabiliser-attach-bolts","history":"/api/acts/ad-beech-77-8-horizontal-stabiliser-attach-bolts/history","analysis":"/api/acts/ad-beech-77-8-horizontal-stabiliser-attach-bolts/analysis","conflicts":"/api/acts/ad-beech-77-8-horizontal-stabiliser-attach-bolts/conflicts","importantCases":"/api/acts/ad-beech-77-8-horizontal-stabiliser-attach-bolts/important-cases","documents":"/api/acts/ad-beech-77-8-horizontal-stabiliser-attach-bolts/documents"}}