{"id":"F2006B11368","name":"AD/MU-2/38 - Landing Gear Aural Warning System","slug":"ad-mu-2-38-landing-gear-aural-warning-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57267,"registerId":"commonwealth-F2006B11368-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/MU-2/38 - Landing Gear Aural Warning System","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)  Mitsubishi MU-2 Series Aeroplanes\n\n \n\nAD/MU-2/38 Landing Gear Aural Warning System 7/86\n\nApplicability: Models MU-2B-25/-26/-26A/-40 with S/Nos. 313SA, 321SA, 365SA and 397SA through 457SA.\n\n \n\nRequirement: Action in accordance with Mitsubishi SB 057/32-010. Compliance: Within 100 hours after 31 July 1986.\n\nBackground:  It has been determined that the landing gear aural warning may not activate in all possible landing conditions.\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":1978},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive retains its original, narrow scope focused solely on rectifying the landing gear warning system defect in the specified Mitsubishi MU-2 aircraft. There is no evidence of expansion beyond this specific safety issue."},"complexity_factors":["Extremely short length (approximately 100 words of operative text)","Narrow applicability limited to specific aircraft models and serial numbers","Single, unambiguous compliance requirement","No defined terms, interpretation section, or legislative cross-references","Clear, absolute compliance deadline with no conditional exceptions","Plain language background statement with no technical legislative drafting"],"plain_english_summary":"**What this is:** An Airworthiness Directive (a mandatory safety order) issued by the Civil Aviation Safety Authority requiring owners to fix a potentially fatal equipment fault in specific aircraft.\n\n**Who it affects:** Owners and operators of Mitsubishi MU-2B-25, -26, -26A, and -40 model aeroplanes with serial numbers 313SA, 321SA, 365SA, and 397SA through 457SA.\n\n**What you must do:** Follow the manufacturer's Service Bulletin SB 057/32-010 to repair or modify the landing gear aural warning system. This work must be completed within 100 flight hours after 31 July 1986.\n\n**Why it matters:** The warning bell or alarm that alerts pilots if the landing gear is not properly extended may fail to sound during certain landing approaches. This creates a significant risk of the aircraft landing with its wheels retracted, which can cause catastrophic damage, injury, or death."}},"importantCases":[],"_links":{"self":"/api/acts/ad-mu-2-38-landing-gear-aural-warning-system","history":"/api/acts/ad-mu-2-38-landing-gear-aural-warning-system/history","analysis":"/api/acts/ad-mu-2-38-landing-gear-aural-warning-system/analysis","conflicts":"/api/acts/ad-mu-2-38-landing-gear-aural-warning-system/conflicts","importantCases":"/api/acts/ad-mu-2-38-landing-gear-aural-warning-system/important-cases","documents":"/api/acts/ad-mu-2-38-landing-gear-aural-warning-system/documents"}}