{"id":"F2006B11227","name":"AD/M20/20 Amdt 1 - Flap Hinges Corrosion","slug":"ad-m20-20-amdt-1-flap-hinges-corrosion","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56945,"registerId":"commonwealth-F2006B11227-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/M20/20 Amdt 1 - Flap Hinges Corrosion","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)  Mooney M20 Series Aeroplanes\n\n \n\nAD/M20/20\n\nAmdt 1\n\n\nFlap Hinges Corrosion 11/85\n\n \n\nApplicability: All models M20C, M20D, M20E, M20F and M20G with S/Nos listed in Requirement Document.\n\n \n\nDocument: Action in accordance with Mooney SB M20-186A.\n\n \n\nCompliance: Within 100 hours time in service after 30 April 1975 and thereafter at intervals not exceeding one year.\n\n \n\nBackground: This Directive is revised to correct aircraft model and serial number applicability.\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":1345},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"This amendment corrects and narrows the applicability from the original directive. It now specifically targets models M20C through M20G with particular serial numbers, whereas the original version apparently contained errors regarding which aircraft models and serial numbers were covered."},"complexity_factors":["External reference to manufacturer service bulletin (Mooney SB M20-186A) required to determine actual inspection steps","Applicability depends on specific serial numbers not listed within the directive itself","Dual-layer compliance timing: one-time initial deadline (100 hours post-April 1975) plus recurring annual requirement"],"plain_english_summary":"**What this does:** This is a safety directive requiring owners and operators of specific Mooney M20 aircraft to inspect the flap hinges for corrosion.\n\n**Who it affects:** Owners of Mooney aeroplane models M20C, M20D, M20E, M20F, and M20G with specific serial numbers (listed in a separate requirement document).\n\n**What you must do:**\n*   Follow the inspection instructions in **Mooney Service Bulletin M20-186A**\n*   Complete the first inspection within **100 flight hours** after 30 April 1975\n*   Repeat the inspection **every year** thereafter\n\n**Why it matters:** Corrosion in flap hinges can weaken the aircraft structure and compromise safety. This amendment (Amendment 1) fixes an error in the original directive by correcting which specific aircraft models and serial numbers are actually covered, ensuring the safety requirements apply to the right planes."}},"importantCases":[],"_links":{"self":"/api/acts/ad-m20-20-amdt-1-flap-hinges-corrosion","history":"/api/acts/ad-m20-20-amdt-1-flap-hinges-corrosion/history","analysis":"/api/acts/ad-m20-20-amdt-1-flap-hinges-corrosion/analysis","conflicts":"/api/acts/ad-m20-20-amdt-1-flap-hinges-corrosion/conflicts","importantCases":"/api/acts/ad-m20-20-amdt-1-flap-hinges-corrosion/important-cases","documents":"/api/acts/ad-m20-20-amdt-1-flap-hinges-corrosion/documents"}}