{"id":"F2006B11259","name":"AD/M20/7 Amdt 1 - Landing Gear Warning System - Modification","slug":"ad-m20-7-amdt-1-landing-gear-warning-system-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57038,"registerId":"commonwealth-F2006B11259-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/M20/7 Amdt 1 - Landing Gear Warning System - Modification","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/M20/7\n\nAmdt 1\n\n\nLanding Gear Warning System - Modification 5/67\n\n \n\nApplicability: All models M20C, M20D and M20E fitted with electrically operated landing gear. Document:              Mooney VB 20-130.\n\nCompliance: Forthwith.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive maintaining its original purpose: mandating a specific safety modification to a defined aircraft type. The 'Amdt 1' indicates this is an amendment to a previous AD, but the scope remains tightly focused on the landing gear warning system for the specified Mooney models."},"complexity_factors":["Extremely short document (under 200 words)","Only 3 defined applicability criteria (aircraft models M20C, M20D, M20E with electric landing gear)","Single compliance requirement with reference to one external technical document (Mooney VB 20-130)","No conditional logic, exceptions, or nested provisions","No cross-references to other legislation or regulations beyond the enabling authority (Civil Aviation Regulations 1998, Part 39)","Standard AD format with clear applicability, document reference, and compliance sections"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific **Mooney M20 series aircraft** (models M20C, M20D, and M20E) that have electrically operated landing gear.\n\n**What it requires:**\n- Aircraft owners/operators must modify the landing gear warning system on these planes\n- The modification must follow the technical instructions in **Mooney Service Bulletin VB 20-130**\n- The work must be done **\"forthwith\"** (immediately, without delay)\n\n**Why it matters:**\nLanding gear warning systems alert pilots if the landing gear isn't properly extended before landing. A faulty system could lead to a **gear-up landing** — an expensive and dangerous accident where the plane lands on its belly. This directive mandates a safety fix to prevent that.\n\n**Who must comply:**\n- Owners and operators of affected Mooney aircraft\n- Licensed aircraft maintenance engineers who perform the work"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The instrument is labelled as Amendment 1 to AD/M20/7, which indicates it modifies a prior airworthiness directive. The supplied excerpt does not include the original AD text or describe what was changed, so the specific nature and extent of the scope change cannot be determined from the material provided. The current text applies to M20C, M20D and M20E aeroplanes with electrically operated landing gear and requires compliance with Mooney VB 20-130 immediately. (AD header; Applicability; Document; Compliance)"},"complexity_factors":["Narrow applicability (specific models and configuration): reduces scope complexity. (Applicability)","Mandatory immediate compliance ('Forthwith') creates urgency but not procedural complexity. (Compliance)","Technical detail is not included in the AD itself; work is delegated to an external manufacturer document (Mooney VB 20-130), which requires affected parties to procure and follow that document. (Document)","Absence of explanatory or enforcement detail in the supplied text increases uncertainty about rationale and enforcement specifics.","Amendment status (Amdt 1) indicates this replaces or modifies a prior directive, which can add administrative complexity if operators must compare versions to determine changes."],"plain_english_summary":"Owners and operators of Mooney M20C, M20D and M20E aeroplanes with electrically operated landing gear must immediately modify the landing‑gear warning system per Mooney VB 20‑130. Maintenance organisations and certificated mechanics must carry out and record the work to that standard. Compliance is mandatory forthwith, creating immediate cost, downtime and administrative burden for owners and workload and certification responsibility for maintainers."}},"importantCases":[],"_links":{"self":"/api/acts/ad-m20-7-amdt-1-landing-gear-warning-system-modification","history":"/api/acts/ad-m20-7-amdt-1-landing-gear-warning-system-modification/history","analysis":"/api/acts/ad-m20-7-amdt-1-landing-gear-warning-system-modification/analysis","conflicts":"/api/acts/ad-m20-7-amdt-1-landing-gear-warning-system-modification/conflicts","importantCases":"/api/acts/ad-m20-7-amdt-1-landing-gear-warning-system-modification/important-cases","documents":"/api/acts/ad-m20-7-amdt-1-landing-gear-warning-system-modification/documents"}}