{"id":"F2006B07563","name":"AD/VAT/3 - Tailplane and Elevator Bolts - Wirelocking","slug":"ad-vat-3-tailplane-and-elevator-bolts-wirelocking","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50157,"registerId":"commonwealth-F2006B07563-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/VAT/3 - Tailplane and Elevator Bolts - Wirelocking","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)  Victa and A.E.S.L. Airtourer Series Aeroplanes\n\n \n\nAD/VAT/3 Tailplane and Elevator Bolts - Wirelocking 2/63\n\nApplicability: Victa Airtourer 100 and 115 with S/Nos. 1 to 15. Document:  Victa SB No. 5.\n\nCompliance: Before 1 September 1971.\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\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive applies only to a narrowly defined set of aircraft (Victa Airtourer 100 and 115, S/Nos. 1–15) and prescribes a single remedial action per the manufacturer's service bulletin (Document; Applicability). Based on the text supplied, it does not broaden regulatory scope beyond that specific requirement."},"complexity_factors":["Very short instrument with a single technical requirement (wirelocking tailplane/elevator bolts).","Narrow applicability limited to Victa Airtourer 100 and 115, serial numbers 1–15 (Applicability).","Relies on an external manufacturer's service bulletin for procedures (Document: Victa SB No. 5).","Fixed compliance deadline contained in the text (Compliance).","No detailed enforcement, alternative compliance routes, or exemptions specified in the supplied text."],"plain_english_summary":"Requires owners/operators of Victa Airtourer 100 and 115 (serials 1–15) to wirelock tailplane and elevator bolts in accordance with Victa Service Bulletin No. 5, to be completed by 1 September 1971.\n\nMaintenance organisations must carry out the work; owners pay parts, labour and downtime. Compliance depends on accessing the external service bulletin; the directive states the required action and deadline but does not specify penalties or alternative compliance routes."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused on a specific mechanical modification for a limited fleet of aircraft. It has not expanded beyond its original narrow safety purpose."},"complexity_factors":["Extremely short document (approximately 100 words of substantive content)","No defined terms section — all terms are standard aviation maintenance terminology","No cross-references to other legislation beyond the enabling regulation (Part 39)","Simple conditional structure: single applicability criterion (specific aircraft serial numbers) and single compliance requirement","No exceptions, exemptions, or nested conditions","Single operational requirement with clear deadline"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA).\n\n**What it does:**\nIt requires owners or operators of specific Victa Airtourer aircraft (serial numbers 1 to 15) to perform a safety modification before 1 September 1971. The modification involves \"wirelocking\" bolts on the tailplane and elevator — a mechanical safety technique where thin wire is threaded through bolt heads to prevent them from loosening due to vibration.\n\n**Who it affects:**\n- Owners and operators of **Victa Airtourer 100 and 115** aircraft with **serial numbers 1 through 15**\n- Maintenance engineers working on these specific aircraft\n\n**Why it matters:**\nLoose bolts on tailplane and elevator components could cause catastrophic control failure. This directive mandates a specific safety fix (detailed in Victa Service Bulletin No. 5) to prevent accidents.\n\n**Key details:**\n- **Compliance deadline:** Before 1 September 1971 (now long past — this is a historical directive)\n- **Technical reference:** Victa Service Bulletin No. 5\n- **Legal basis:** Civil Aviation Regulations 1988, Part 39 (the rules allowing CASA to issue mandatory safety directives)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-vat-3-tailplane-and-elevator-bolts-wirelocking","history":"/api/acts/ad-vat-3-tailplane-and-elevator-bolts-wirelocking/history","analysis":"/api/acts/ad-vat-3-tailplane-and-elevator-bolts-wirelocking/analysis","conflicts":"/api/acts/ad-vat-3-tailplane-and-elevator-bolts-wirelocking/conflicts","importantCases":"/api/acts/ad-vat-3-tailplane-and-elevator-bolts-wirelocking/important-cases","documents":"/api/acts/ad-vat-3-tailplane-and-elevator-bolts-wirelocking/documents"}}