{"id":"F2006B02570","name":"AD/AUS/19 - Elevator Trim Tab Wires - Life Limitation","slug":"ad-aus-19-elevator-trim-tab-wires-life-limitation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41826,"registerId":"commonwealth-F2006B02570-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AUS/19 - Elevator Trim Tab Wires - Life Limitation","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)  Auster/Beagle A.61 Series Aeroplanes\n\n \n\nAD/AUS/19 Elevator Trim Tab Wires - Life Limitation 5/68\n\nApplicability: All models.\n\n \n\nRequirement: Replace the elevator trim tab control wires. Compliance: Within 1000 hours time in service after installation.\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 text supplied sets a single, specific requirement (replace elevator trim tab control wires within 1,000 hours after installation) that applies to all Auster/Beagle A.61 models. The document contains no information indicating a change from an earlier scope or intent; there is no language in the supplied text suggesting the scope has been expanded or narrowed relative to any prior instrument."},"complexity_factors":["Single, narrowly framed technical action: replace elevator trim tab control wires.","Uniform applicability: applies to all models of Auster/Beagle A.61 series (reduces scope complexity).","Clear compliance window: 1,000 hours time-in-service after installation (simple metric but requires tracking).","Lack of technical detail: no specified parts, procedures or approved data in the text, which increases practical implementation ambiguity.","Recordkeeping and scheduling requirement: operators must track hours since installation to meet the limit."],"plain_english_summary":"This Civil Aviation Safety Authority airworthiness directive requires owners/operators of all Auster/Beagle A.61 series aeroplanes to replace the elevator trim‑tab control wires within 1,000 hours time‑in‑service after installation. It imposes a fixed service life and monitoring obligation on operators, who bear replacement costs and must schedule/record the work; the text does not specify parts or procedures."},"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused specifically on elevator trim tab wire replacement for a single aircraft series. It has not expanded beyond its original purpose."},"complexity_factors":["Extremely short document (approximately 100 words of substantive content)","No defined terms section","No cross-references to other legislation or regulations","Single, unambiguous requirement with clear compliance deadline","No conditional logic, exceptions, or nested provisions","Plain language applicability statement ('All models')","Straightforward compliance metric (hours time in service)"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires owners and operators of **Auster/Beagle A.61 Series Aeroplanes** (a type of light aircraft) to replace the **elevator trim tab control wires** — the cables that help adjust the plane's pitch stability.\n\n**Who it affects:** Anyone who owns, operates, or maintains these specific aircraft models.\n\n**The requirement:** The wires must be replaced **within 1,000 hours of flight time** after they are installed. This is a \"life limit\" — meaning the parts have a fixed service life and cannot be used beyond that point, regardless of condition.\n\n**Why it matters:** Elevator trim tabs are critical for controlling the aircraft's attitude. If these wires fail in flight, the pilot could lose pitch control, potentially leading to loss of the aircraft and lives. This AD prevents catastrophic failure by mandating preventive replacement before the wires reach a known fatigue life."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aus-19-elevator-trim-tab-wires-life-limitation","history":"/api/acts/ad-aus-19-elevator-trim-tab-wires-life-limitation/history","analysis":"/api/acts/ad-aus-19-elevator-trim-tab-wires-life-limitation/analysis","conflicts":"/api/acts/ad-aus-19-elevator-trim-tab-wires-life-limitation/conflicts","importantCases":"/api/acts/ad-aus-19-elevator-trim-tab-wires-life-limitation/important-cases","documents":"/api/acts/ad-aus-19-elevator-trim-tab-wires-life-limitation/documents"}}