{"id":"F2006B04175","name":"AD/BEECH 76/17 - Wing Lower and Upper Splice Plate Bolt Installation","slug":"ad-beech-76-17-wing-lower-and-upper-splice-plate-bolt-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43928,"registerId":"commonwealth-F2006B04175-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 76/17 - Wing Lower and Upper Splice Plate Bolt Installation","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 76 (Duchess) Series Aeroplanes\n\n \n\nAD/BEECH 76/17 Wing Lower and Upper Splice\n\nPlate Bolt Installation\n\n\n10/85\n\n \n\nApplicability: All model 76 with S/Nos ME-3 to ME-377, ME-379 to ME-428, ME-430 to ME-432. Requirement:               Action in accordance with Beechcraft S.B. No. 2038.\n\nCompliance: Within 100 hours’ time in service after 31 October 1985 or at the next scheduled inspection for Maintenance Release issue after 31 October 1985, whichever is the later.\n\n \n\nBackground: During an annual inspection, the wing spar lower splice plate nuts were found to bottom out on the threads. Threads bottoming out can create a progressively weaker joint in this critical area.\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":1915},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow, technical scope addressing a specific mechanical defect in identified aircraft models. It has not expanded beyond the original safety issue of wing splice plate bolt installation."},"complexity_factors":["Single specific requirement referencing external technical standard (Beechcraft Service Bulletin 2038)","Limited applicability to specific aircraft serial number ranges","Simple alternative compliance deadline (whichever is the later)"],"plain_english_summary":"This is a **mandatory safety order** for owners and operators of specific Beechcraft 76 Duchess aircraft.\n\n**What it requires:**\nYou must inspect and fix the bolts on the wing splice plates (the metal plates connecting parts of the wing structure) according to Beechcraft Service Bulletin No. 2038.\n\n**Why it matters:**\nDuring routine checks, authorities discovered that the nuts on these bolts were 'bottoming out'—meaning they couldn't tighten properly against the metal surface. This creates a dangerous weak point in the wing structure that could get worse over time and potentially lead to wing failure.\n\n**Who must comply:**\nAircraft with serial numbers ME-3 to ME-377, ME-379 to ME-428, and ME-430 to ME-432.\n\n**When to act:**\nWithin 100 hours of flight time after 31 October 1985, or at the next scheduled maintenance check after that date—whichever comes later."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-76-17-wing-lower-and-upper-splice-plate-bolt-installation","history":"/api/acts/ad-beech-76-17-wing-lower-and-upper-splice-plate-bolt-installation/history","analysis":"/api/acts/ad-beech-76-17-wing-lower-and-upper-splice-plate-bolt-installation/analysis","conflicts":"/api/acts/ad-beech-76-17-wing-lower-and-upper-splice-plate-bolt-installation/conflicts","importantCases":"/api/acts/ad-beech-76-17-wing-lower-and-upper-splice-plate-bolt-installation/important-cases","documents":"/api/acts/ad-beech-76-17-wing-lower-and-upper-splice-plate-bolt-installation/documents"}}