{"id":"F2006B10213","name":"AD/GAF-N22/64 - Aileron Structure","slug":"ad-gaf-n22-64-aileron-structure","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55871,"registerId":"commonwealth-F2006B10213-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAF-N22/64 - Aileron Structure","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)  \nGAF N22 and N24 Series Aeroplanes\n\nAD/GAF-N22/64 Aileron Structure 13/92 DM\n\nApplicability: Model N22 and N24 Series, equipped with ailerons P/N 1/N-24-101 LH, P/N 1/N-24- 102 RH, P/N 2/N-24-101 LH, and P/N 2/N-24-102 RH. Aircraft LS62, 119, and 159\n\nto 165 are excepted.\n\nRequirement: 1. Carry out an inspection of the ailerons in accordance with the Accomplishment Instructions of ASTA Nomad Alert Service Bulletin ANMD-57-9.\n\n2. Incorporate Modification N634 in accordance with the Accomplishment Instructions of ASTA Nomad Alert Service Bulletin ANMD-57-9.\n\nCompliance: 1. Within 50 hours time in service after 28 October 1992.\n\n2. Prior to 31 December 1993.\n\nBackground: The manufacturer had received reports from several operators of instances of buckling of the aileron leading edge skin, which was believed to be the cause of a loss of control of the affected aircraft. One loss of control incident was considered to be a result of aileron flutter, which had occurred at a lower than normal speed because the ailerons had suffered structural degradation, caused by a flap/aileron overspeed at some time prior to the incident.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive targets a specific set of Nomad models and aileron part numbers and prescribes inspection plus a defined modification per the referenced service bulletin. The text does not expand applicability or impose additional obligations beyond those stated."},"complexity_factors":["Narrow applicability to specific aircraft models and four aileron part numbers (Applicability).","Explicit exceptions for a range of aircraft serials (\"Aircraft LS62, 119, and 159 to 165 are excepted\").","Two mandatory actions with different deadlines: an inspection within 50 hours TIS after 28 Oct 1992 and modification prior to 31 Dec 1993 (Requirement; Compliance).","Reliance on external technical instructions: all work must follow ASTA Nomad Alert Service Bulletin ANMD-57-9 (Requirement).","Mandated incorporation of a named modification (Modification N634) rather than open-ended corrective measures (Requirement).","Safety-critical nature of the defect (risk of aileron buckling and flutter) implies strict adherence and potential urgent operational disruption (Background).","Operational impacts for operators include scheduling inspections/modification, downtime, and procurement/installation of the modification parts."],"plain_english_summary":"This airworthiness directive requires operators of GAF Nomad N22 and N24 aircraft fitted with specified aileron part numbers to inspect those ailerons and install Modification N634, following ASTA Nomad Alert Service Bulletin ANMD-57-9. It was issued after reports of aileron leading-edge skin buckling and an incident of aileron flutter linked to prior overspeed damage; the measures are intended to find and fix structural degradation that could lead to loss of control."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive. It addresses a specific structural defect in specific aircraft models and does not represent scope creep from any broader legislative scheme."},"complexity_factors":["Single, specific aircraft type and limited part number range","Only 2 compliance requirements with clear deadlines","Straightforward exception list (6 specific aircraft serial numbers)","No nested definitions or cross-references to other legislation","Background explanation is concise and contextual","Total length is approximately 200 words"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of specified GAF N22/N24 aeroplanes (with certain aileron part numbers, excluding S/N LS62, 119, and 159–165) to inspect ailerons per Service Bulletin ANMD‑57‑9 within 50 flight hours after 28 Oct 1992 and install Modification N634 by 31 Dec 1993. It responds to aileron leading‑edge buckling that led to flutter and loss of control, so the measures are compulsory to prevent catastrophic failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gaf-n22-64-aileron-structure","history":"/api/acts/ad-gaf-n22-64-aileron-structure/history","analysis":"/api/acts/ad-gaf-n22-64-aileron-structure/analysis","conflicts":"/api/acts/ad-gaf-n22-64-aileron-structure/conflicts","importantCases":"/api/acts/ad-gaf-n22-64-aileron-structure/important-cases","documents":"/api/acts/ad-gaf-n22-64-aileron-structure/documents"}}