{"id":"F2006B02409","name":"AD/ANSON/12 - Undercarriage Jack Channel, Upper Support Brackets - Inspection","slug":"ad-anson-12-undercarriage-jack-channel-upper-support-brackets-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41652,"registerId":"commonwealth-F2006B02409-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ANSON/12 - Undercarriage Jack Channel, Upper Support Brackets - Inspection","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)  Avro Anson and Avro 19 Series Aeroplanes\n\n \n\nAD/ANSON/12 Undercarriage Jack Channel, Upper\n\nSupport Brackets - Inspection\n\nApplicability: Anson and Avro 19. Document:  Avro TSB No. 85.\n\nCompliance: At intervals not exceeding 150 hours time in service.\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\n10/62\n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument, as presented, imposes a narrowly defined inspection requirement for Anson and Avro 19 aeroplanes and specifies a 150-hour interval. The text contains no indication that the affected fleet, inspection scope, or interval has been expanded or reduced from an earlier stated intent; therefore there is no evidence in the supplied text that the scope has changed."},"complexity_factors":["Narrow applicability: only Avro Anson and Avro 19 aeroplanes are affected (Applicability).","Single, simple mandate: one recurring inspection requirement with a single fixed interval (Compliance: 150 hours TIS).","Dependence on external technical document (Avro TSB No. 85) for procedural detail introduces some interpretive reliance.","Enforcement and remedial detail not specified in the AD text itself—requires cross-reference to TSB and regulatory maintenance records.","Operational implementation requires scheduling and record-keeping but no complex regulatory scheme or multiple compliance pathways."],"plain_english_summary":"Mandates recurring inspection of the undercarriage jack‑channel upper support brackets on Avro Anson and Avro 19 aircraft, referencing Avro Technical Service Bulletin No. 85 and requiring checks at intervals not exceeding 150 hours time‑in‑service.\n\nAffects aircraft owners/operators and maintenance organisations; operators must fund and schedule the inspections and any corrective work per the AD and the referenced TSB."},"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused on a specific mechanical inspection. It has not expanded beyond its original purpose of ensuring landing gear structural integrity on these particular vintage aircraft."},"complexity_factors":["Extremely short document — approximately 100 words","No defined terms section","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Simple, unambiguous compliance requirement (150-hour interval)","Single applicability criterion (aircraft type)","No conditional logic, exceptions, or nested provisions"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for **Avro Anson and Avro 19 series aircraft**.\n\n**What it does:**\n- Requires regular **inspections of the undercarriage jack channel and upper support brackets** — these are structural parts of the landing gear system.\n- The inspection must happen **every 150 hours of flight time** (\"time in service\").\n\n**Who it affects:**\n- Owners and operators of **Anson and Avro 19 aeroplanes** — these are vintage British twin-engine aircraft from the 1930s-40s, now mostly used in heritage aviation.\n\n**Why it matters:**\n- Landing gear failures are catastrophic. This directive prevents structural fatigue or corrosion in these specific components from causing accidents.\n- It references **Avro TSB No. 85** — a technical service bulletin from the original manufacturer providing the inspection procedure.\n\n**Key detail:** This directive dates from **October 1962** (\"10/62\"), showing it is a long-standing maintenance requirement for these historic aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-anson-12-undercarriage-jack-channel-upper-support-brackets-inspection","history":"/api/acts/ad-anson-12-undercarriage-jack-channel-upper-support-brackets-inspection/history","analysis":"/api/acts/ad-anson-12-undercarriage-jack-channel-upper-support-brackets-inspection/analysis","conflicts":"/api/acts/ad-anson-12-undercarriage-jack-channel-upper-support-brackets-inspection/conflicts","importantCases":"/api/acts/ad-anson-12-undercarriage-jack-channel-upper-support-brackets-inspection/important-cases","documents":"/api/acts/ad-anson-12-undercarriage-jack-channel-upper-support-brackets-inspection/documents"}}