{"id":"F2006B07552","name":"AD/VAT/2 - Rudder Pedal Bearing Blocks - Modification","slug":"ad-vat-2-rudder-pedal-bearing-blocks-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50146,"registerId":"commonwealth-F2006B07552-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/VAT/2 - Rudder Pedal Bearing Blocks - Modification","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/2 Rudder Pedal Bearing Blocks - Modification 2/63\n\nApplicability: Victa Airtourer 100 with S/Nos. 1 to 15. Document:  Victa SB No. 4.\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":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-limited safety directive for a specific mechanical issue in early-production aircraft. It has not expanded beyond its original narrow scope."},"complexity_factors":["Extremely short document (under 150 words)","Only 4 operative elements: applicability, reference document, compliance deadline, and subject matter","No defined terms section","No cross-references to other legislation beyond the enabling regulations (Civil Aviation Regulations 1998, Part 39)","Single, unambiguous compliance requirement with no exceptions or conditional logic","Clear, specific applicability (serial numbers 1-15 of one aircraft model)"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires a specific safety modification to be made to the **rudder pedal bearing blocks** on certain Victa Airtourer 100 aircraft. The rudder pedals are what pilots use to steer the plane on the ground and coordinate turns in the air; the \"bearing blocks\" are the mechanical parts that allow these pedals to pivot smoothly. If these parts fail, the pilot could lose control of the aircraft's direction.\n\n**Who it affects:** Owners and operators of **Victa Airtourer 100 aeroplanes with serial numbers 1 to 15** (the first 15 aircraft built).\n\n**What must be done:** The modification must be carried out following **Victa Service Bulletin No. 4** (the manufacturer's official repair instruction).\n\n**When it had to be done:** Before **1 September 1971**.\n\n**Why it matters:** This directive addresses a specific mechanical defect in early-production aircraft. Airworthiness Directives are legally binding — ignoring them means the aircraft cannot be flown legally in Australia."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The text of the directive sets a narrowly framed requirement: modify rudder pedal bearing blocks on Victa Airtourer 100 aircraft S/Nos. 1–15 by a specific date and follow Victa SB No. 4. There is no indication in the provided text that the scope (affected aircraft, required action, compliance date, or reference document) has been altered from the directive as stated."},"complexity_factors":["Narrow applicability: applies only to Victa Airtourer 100 with serial numbers 1–15 (Applicability line)","Single required action: a modification of rudder pedal bearing blocks (title)","Single compliance deadline: before 1 September 1971 (Compliance line)","Dependency on an external technical document for implementation details: Victa SB No. 4 (Document line)","No procedural exemptions or alternate compliance methods stated in provided text","Regulatory provenance is clear and limited (CASA airworthiness directive header), reducing interpretive ambiguity"],"plain_english_summary":"The Civil Aviation Safety Authority requires owners/operators of Victa Airtourer 100 aeroplanes (S/N 1–15) to modify the rudder pedal bearing blocks per Victa Service Bulletin No. 4. The mandatory modification must be completed before 1 September 1971, with compliance responsibility (and cost) falling on the aircraft owners/operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-vat-2-rudder-pedal-bearing-blocks-modification","history":"/api/acts/ad-vat-2-rudder-pedal-bearing-blocks-modification/history","analysis":"/api/acts/ad-vat-2-rudder-pedal-bearing-blocks-modification/analysis","conflicts":"/api/acts/ad-vat-2-rudder-pedal-bearing-blocks-modification/conflicts","importantCases":"/api/acts/ad-vat-2-rudder-pedal-bearing-blocks-modification/important-cases","documents":"/api/acts/ad-vat-2-rudder-pedal-bearing-blocks-modification/documents"}}