{"id":"F2006B07577","name":"AD/VAT/42 Amdt 1 - Control Column Waggler P/N 52115 - Inspection and Modification","slug":"ad-vat-42-amdt-1-control-column-waggler-p-n-52115-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50192,"registerId":"commonwealth-F2006B07577-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/VAT/42 Amdt 1 - Control Column Waggler P/N 52115 - Inspection and Modification","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)  \n![](image.002.png)  \nVicta and A.E.S.L. Airtourer Series Aeroplanes\n\nAIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/VAT/42 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nAD/VAT/42\n\nAmdt 1\n\n  \n\nControl Column Waggler P/N 52115 \\- Inspection and Modification\n\n  \n11/2000 TX\n\nApplicability: All Models except T6.\n\nRequirement: 1. Visually inspect both Waggler attach arms for cracks in accordance with Edge Aviation Service Bulletin EA-AT-2000/001 Issue 1 Section 2. Anticipated crack locations are as indicated at Figure 1.\n\n![](image.003.png)Anticipated Crack Locations\n\nFigure 1\n\n2. Modify in accordance with Edge Aviation Service Bulletin EA-AT-2000/001 Issue 1 Section 3 or a modification approved by a CAR 35 Authorised Person.\n\nNote: Wagglers modified in accordance with the initial issue of this AD have waggler arms which have been doubled in thickness by the addition of welded doublers to the outer faces of the side attachment arms. Total thickness of the side attachment arms of modified wagglers should be approximately 0.098” (2.49mm). Wagglers so modified meet requirement 2 of this AD.\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nCompliance: 1. Unless already accomplished, before further flight and thereafter at intervals not exceeding 100 hours time in service until modified.\n\n2. Unless already accomplished, within 12 months from the date of effect of this amendment.\n\nThis Amendment becomes effective on 29 September 2000.\n\nBackground: The original issue of this AD was raised as a result of two instances of control column waggler arm cracking having been found following aileron control malfunction. This amendment is issued as a result of a further case of a seriously cracked waggler, and also to update the AD and require modification of the wagglers rather than indefinite periodic inspections.\n\n![Signature of William Ronald Smith Delegate of the Civil Aviation Safety Authority](image.004.png)  \n\nWilliam Ronald Smith\n\nDelegate of the Civil Aviation Safety Authority 26 September 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 29 September 2000.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment narrows the long‑term compliance approach: the original AD required ongoing inspections, while this amendment requires modification of the waggler within 12 months and limits recurring inspections to the period before modification (Requirement; Compliance; Background). The AD also formally revokes the earlier AD and specifies acceptable modification work (Requirement 2; Note)."},"complexity_factors":["Narrow technical scope — applies only to Victa and A.E.S.L. Airtourer series, excluding model T6 (Applicability).","Clear compliance timing — immediate inspection before further flight and repeat every 100 hours until modification, plus a 12‑month deadline for modification (Compliance: items 1 and 2).","Prescriptive technical remedy — references Edge Aviation Service Bulletin EA-AT-2000/001 Issue 1 Sections 2 and 3 for inspection and modification procedures (Requirement 1 & 2).","Approval path for alternate work — allows a modification approved by a CAR 35 Authorised Person, introducing regulatory discretion for non-standard fixes (Requirement 2).","Measurable post‑modification spec — target total side‑arm thickness ~0.098” (2.49 mm) stated in the Note, which creates an objective acceptance criterion.","Regulatory linkage — issued under subregulation 39.1(1) of CAR 1998 and replaces a prior AD, so implementers must track amendment history (preamble/Background).","Safety trigger documented — Background cites multiple instances of cracking after aileron malfunction, explaining the operational risk prompting the AD."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Victa and A.E.S.L. Airtourer series aeroplanes (all models except T6) to inspect the control-column \"waggler\" attach arms for cracks before further flight and every 100 hours until the part is modified, and to have the waggler modified (or an approved alternative fitted) within 12 months. It was issued after multiple cracked waggler arms were found; the specified modification increases the side-arm thickness to about 0.098” (2.49 mm). Operators bear inspection and modification costs; modifications must be approved or carried out by a CAR 35 Authorised Person."},"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":3,"scope_assessment":{"changed":false,"description":"This amendment tightens the original AD's scope rather than expanding it. The original required indefinite repetitive inspections; this version mandates a permanent modification with a 12-month deadline, effectively narrowing the ongoing compliance burden while maintaining the same safety objective for the same aircraft population."},"complexity_factors":["Short, single-purpose document focused on one specific mechanical defect","Only 2 substantive requirements (inspect and modify) with clear cross-reference to a single external technical document (Edge Aviation Service Bulletin)","Minimal defined terms — only standard aviation terminology (\"time in service\", \"CAR 35 Authorised Person\")","Simple conditional logic: compliance deadlines are straightforward (before further flight / within 12 months / every 100 hours)","One explicit exception noted (wagglers already modified per original AD are deemed compliant)","No nested exceptions or complex cross-references to other legislation beyond the basic CAR 1998 enabling power"],"plain_english_summary":"Australia’s CASA has issued an Airworthiness Directive requiring owners/operators of Victa and A.E.S.L. Airtourer aeroplanes (all models except the T6) to inspect and permanently reinforce the Control Column Waggler (PN 52115) because cracking has risked aileron-control failure. \n\nInspections are required before the next flight and every 100 hours until the mandatory modification—welding reinforcement “doublers” to ~2.5 mm per Edge Aviation SB or CAR 35 approval—must be completed within 12 months of 29 Sept 2000."}},"importantCases":[],"_links":{"self":"/api/acts/ad-vat-42-amdt-1-control-column-waggler-p-n-52115-inspection-and-modification","history":"/api/acts/ad-vat-42-amdt-1-control-column-waggler-p-n-52115-inspection-and-modification/history","analysis":"/api/acts/ad-vat-42-amdt-1-control-column-waggler-p-n-52115-inspection-and-modification/analysis","conflicts":"/api/acts/ad-vat-42-amdt-1-control-column-waggler-p-n-52115-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-vat-42-amdt-1-control-column-waggler-p-n-52115-inspection-and-modification/important-cases","documents":"/api/acts/ad-vat-42-amdt-1-control-column-waggler-p-n-52115-inspection-and-modification/documents"}}