{"id":"F2006B02360","name":"AD/AMD 20/21 Amdt 1 - Flight Controls","slug":"ad-amd-20-21-amdt-1-flight-controls","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41590,"registerId":"commonwealth-F2006B02360-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AMD 20/21 Amdt 1 - Flight Controls","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 Fan Jet Falcon (Falcon 20/Mystere-Falcon 200) Series Aeroplanes\n\nAD/AMD 20/21\n\nAmdt 1\n\n  \nFlight Controls 11/91\n\nApplicability: All models with serial numbers listed in the Requirement Document.\n\nRequirement: (a) For S/N up to 319 inclusive except 309; action in accordance with AMD SB 524 Rev. 2, and\n\n(b) For S/N up to 346 inclusive except 309; action in accordance with AMD SB 522 Rev. 1 or AMD SB 527.\n\nCompliance: The compliance date of the previous issue of this Directive was 30 June 1989. This revision is effective from 14 November 1991.\n\nBackground: Incidents involving elevator trim runaway are well documented for this model aircraft. A further recent incident has precipitated correspondence with AMD who point out that since incorporation of this subject SB’s these incidents have ceased.\n\nAmendment 1 to this AD is raised to reflect the issue of AMD SB 527.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1502},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment expands the compliance options by adding Service Bulletin 527 as an acceptable method for certain serial numbers, but the fundamental scope remains unchanged: it continues to address elevator trim runaway safety issues in the same aircraft series without expanding to new aircraft types or unrelated systems."},"complexity_factors":["References external technical documents (Service Bulletins 522, 524, and 527) not reproduced in the text","Applicability defined by serial number ranges with specific exclusions (e.g., 'up to 319 inclusive except 309')","Amendment structure requires cross-referencing with previous issue dates and compliance requirements","Technical aviation terminology (e.g., 'elevator trim runaway', 'S/N')"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of certain AMD Fan Jet Falcon (Falcon 20/Mystere‑Falcon 200) aircraft to correct a known elevator-trim malfunction that can cause runaway trim and loss of control. It mandates manufacturer-approved repairs to eliminate the hazard after several reported incidents.\n\nIt applies to Falcons within specified serial-number ranges and directs compliance with the manufacturer’s service bulletins (existing or newly issued) for those affected aircraft. Compliance is mandatory to ensure continued safe operation."}},"importantCases":[],"_links":{"self":"/api/acts/ad-amd-20-21-amdt-1-flight-controls","history":"/api/acts/ad-amd-20-21-amdt-1-flight-controls/history","analysis":"/api/acts/ad-amd-20-21-amdt-1-flight-controls/analysis","conflicts":"/api/acts/ad-amd-20-21-amdt-1-flight-controls/conflicts","importantCases":"/api/acts/ad-amd-20-21-amdt-1-flight-controls/important-cases","documents":"/api/acts/ad-amd-20-21-amdt-1-flight-controls/documents"}}