{"id":"F2006B02396","name":"AD/AMD 50/3 Amdt 1 - MLG Door Emergency Release Lever and Pin","slug":"ad-amd-50-3-amdt-1-mlg-door-emergency-release-lever-and-pin","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41639,"registerId":"commonwealth-F2006B02396-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AMD 50/3 Amdt 1 - MLG Door Emergency Release Lever and Pin","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nAMD Falcon 50 and 900 Series Aeroplanes\n\nAD/AMD 50/3\n\nAmdt 1\n\n  \nMLG Door Emergency Release Lever and Pin 8/89\n\nApplicability: All models 50 and 900 aircraft.\n\nRequirement: 1. Unless Requirement 2 has been accomplished, carry out a manual opening of the main landing gear doors in accordance with the instructions of the manufacturer Maintenance Manual; Work Card 480.0 Para. 3 for the model 50 and Maintenance Procedure 32-120 for the model 900. Check for broken MLG door emergency release pins.\n\n2. Action in accordance with Service Bulletins: F50-208 for the Mystere-Falcon 50; and F900-52 for the Mystere-Falcon 900.\n\nNote 1: Compliance with Requirement 2 constitutes terminating action for this AD. Note 2: DGAC AD 88-140-006(B)R2 and DGAC AD 89-041-007(B) refer.\n\nCompliance: 1. Prior to the accumulation of 1000 landings.\n\n2. Prior to the accumulation of 2000 landings.\n\nBackground: This Airworthiness Directive is prompted by reports of the MLG door emergency release pin breaking due to fatigue failure. An inspection plus a modification that replaces the release lever and splined pin, has been introduced by the manufacturer to prevent the possible inability to carry out an emergency extension.\n\nThis Amendment is raised to correct a typographical error.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment makes no substantive change to scope. It corrects a typographical error in the original 1989 Airworthiness Directive without altering the applicability, requirements, or compliance timeframes."},"complexity_factors":["Single, specific mechanical component addressed (MLG door emergency release pin)","Only 2 compliance paths with clear terminating action","Minimal cross-referencing (2 manufacturer service bulletins and 2 French aviation authority references in notes only)","No defined terms section","Straightforward conditional logic (if Requirement 2 done, Requirement 1 not needed)","Short document (approximately 200 words)","Amendment limited to typographical correction"],"plain_english_summary":"This Airworthiness Directive requires operators and maintenance crews of Dassault Falcon 50 and 900 series jets to manually open the main gear doors and inspect the emergency release pin for fatigue, and to fit an improved release lever and splined pin if the pin is broken. An undetected failure could prevent manual gear extension and cause a belly landing.\n\nInitial inspection is due before 1,000 landings and the permanent replacement must be fitted before 2,000 landings. This revision only corrects a typo."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The amendment solely corrects a typographical error. It does not alter applicability, inspection or modification requirements, or the landing‑count compliance deadlines set out in the directive."},"complexity_factors":["Narrow applicability: only Mystère‑Falcon model 50 and 900 aircraft (limits stakeholder set).","Technical tasking: requires manual opening and inspection plus a mechanical modification (requires maintenance skills/equipment).","Compliance timing tied to aircraft utilisation (landing counts), creating tracking/recordkeeping requirements.","Terminating action depends on completion of manufacturer Service Bulletins (operational reliance on external documents).","Safety‑critical nature increases enforcement and oversight importance despite straightforward steps.","Amendment scope limited to a typographical correction—no change in substantive obligations or deadlines."],"plain_english_summary":"This directive requires operators of Mystère‑Falcon 50 and 900 aeroplanes to manually open the main landing‑gear doors and inspect the emergency‑release pins, and—if the manufacturer’s service‑bulletin modification has not been done—to replace the release lever and splined pin. It addresses reports of fatigue failure of the release pin that could prevent emergency gear extension. The amendment corrects a typographical error and does not change the substantive requirements or who must comply."}},"importantCases":[],"_links":{"self":"/api/acts/ad-amd-50-3-amdt-1-mlg-door-emergency-release-lever-and-pin","history":"/api/acts/ad-amd-50-3-amdt-1-mlg-door-emergency-release-lever-and-pin/history","analysis":"/api/acts/ad-amd-50-3-amdt-1-mlg-door-emergency-release-lever-and-pin/analysis","conflicts":"/api/acts/ad-amd-50-3-amdt-1-mlg-door-emergency-release-lever-and-pin/conflicts","importantCases":"/api/acts/ad-amd-50-3-amdt-1-mlg-door-emergency-release-lever-and-pin/important-cases","documents":"/api/acts/ad-amd-50-3-amdt-1-mlg-door-emergency-release-lever-and-pin/documents"}}