{"id":"F2006B07731","name":"Airworthiness Directives 2004 - Revocation and Remaking - Avro Anson and Avro 19 Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-avro-anson-and-avro-19-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50463,"registerId":"commonwealth-F2006B07731-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Avro Anson and Avro 19 Series Aeroplanes","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nAvro Anson and Avro 19 Series Aeroplanes\n\nAD Name AD Number\n\nTail Plane Bracing - Modification AD/ANSON/1\n\nRudder Pedal Centre Gears - Guard Installation AD/ANSON/2\n\nBoost Gauge - Modification AD/ANSON/3\n\nAileron Hinge Brackets - CANCELLED AD/ANSON/4\n\nPilots Cabin Emergency Exit - Modification AD/ANSON/5\n\nOil Tank and Pipelines - Modification AD/ANSON/6\n\nWheel Well - CANCELLED AD/ANSON/7\n\nFuel Crossfeed Cock Placard - Installation AD/ANSON/8\n\nEngine Mount - Inspection AD/ANSON/9\n\nFuel Crossfeed Cock - Inspection AD/ANSON/10\n\nAileron Lever - Inspection AD/ANSON/11\n\nUndercarriage Jack Channel, Upper Support Brackets - Inspection AD/ANSON/12\n\nMainplane Trailing Edge Ribs, Top Skin and Aileron Hinges - Inspection AD/ANSON/13\n\nMain Undercarriage Shock Absorber Struts and Radius Rods - Inspection AD/ANSON/14 Amdt 1\n\nMainplane - Inspection AD/ANSON/15 Amdt 1\n\nFuselage and Fin Structure - Inspection AD/ANSON/16 Amdt 1\n\nEngine Mounting Sub-Frame - Inspection AD/ANSON/17 Amdt 1\n\nAttachment Bolts - Inspection AD/ANSON/18\n\nFuselage Floor - Inspection AD/ANSON/19 Amdt 1\n\nUndercarriage Operating Tube - Inspection AD/ANSON/20 Amdt 1\n\nFuselage Covering - Inspection AD/ANSON/21 Amdt 1\n\nMainplane Spar Boom Joints - Inspection AD/ANSON/22\n\nMain Undercarriage Radius Rod Tube at Rear Spar Attachment - Inspection AD/ANSON/23","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument explicitly states it is remaking the ADs \"in exactly the same form as appears in the latest published edition.\" This is a pure administrative re-authorisation under current regulations, with no expansion of scope beyond the original safety requirements for these specific aircraft types."},"complexity_factors":["Very short instrument (under 2 pages)","No defined terms section — relies on external aviation knowledge","Simple binary structure: revoke old, make new","Schedule 1 is a straightforward table with 23 entries","No conditional logic or nested exceptions","Heavy reliance on attached documents (the actual ADs) which are not reproduced in the instrument itself","Assumes technical knowledge of aircraft maintenance terminology (e.g., \"aileron hinge brackets\", \"spar boom joints\")"],"plain_english_summary":"This instrument revokes and re‑issues 23 Airworthiness Directives for Avro Anson and Avro 19 vintage British aircraft, replacing old ADs with fresh legal instruments in the same form. Two ADs (AD/ANSON/4 and AD/ANSON/7) are cancelled entirely.\n\nIt affects owners, operators, and maintenance engineers of these heritage aircraft because ADs are legally binding safety orders. The remake is housekeeping to keep existing inspection and modification requirements enforceable under current law, without changing what must be done."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument does not expand the substantive scope of airworthiness regulation for Avro Anson/Avro 19 series aircraft. It revokes and re‑issues existing Airworthiness Directives in their current published form. The change is administrative (form and issuance of the instruments) rather than substantive (no new or altered technical requirements are introduced). The inclusion of previously cancelled AD entries in the Schedule does not appear to extend regulatory obligations."},"complexity_factors":["Short single operative provision (revocation and re‑making) with one statutory citation: subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998","Schedule lists 23 AD entries (some marked \"Amdt 1\" and two marked \"CANCELLED\") but no new substantive requirements introduced","Note explicitly states re‑made ADs are identical to latest published editions (reduces substantive complexity)","Administrative change only — minimal cross‑references, no nested conditional logic or new definitions","Potential practical complexity limited to record‑keeping and ensuring correct instrument references"],"plain_english_summary":"**What this instrument does (mechanically)\n\n- A delegate of the Civil Aviation Safety Authority (CASA) uses the power in subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 to revoke a group of existing Airworthiness Directives (ADs) that apply to Avro Anson and Avro 19 series aeroplanes, and to re‑make each of those ADs as a separate legal instrument.  (Text: the instrument opens by identifying the delegate and cites subregulation 39.001(1).)\n\n- The Schedule lists the ADs being revoked and re‑made by name and AD number (for example, \"Tail Plane Bracing - Modification AD/ANSON/1\", \"Engine Mount - Inspection AD/ANSON/9\", through a total list of the items shown).  Two entries in the Schedule are noted as \"CANCELLED\" (AD/ANSON/4 and AD/ANSON/7).\n\n- A note in the instrument says each attached Airworthiness Directive is being re‑made in exactly the same form as in the latest published edition of the Directive.  In other words, the text of the safety requirements is not changed by this instrument; the ADs are being re‑issued as separate instruments in their current published form.\n\nWho this affects\n\n- Owners and operators of Avro Anson and Avro 19 series aircraft registered in Australia.  They are the parties responsible for complying with ADs when those ADs impose inspections, modifications, placard installations, or other mandatory maintenance actions.\n\n- Maintenance organisations, licensed aircraft engineers and certifying staff who carry out the inspections, modifications and record keeping required by those ADs.\n\n- CASA and its administrative staff, because the instrument changes how the ADs are issued and recorded as legal instruments.\n\nWhy it matters (practical implications)\n\n- Airworthiness Directives are mandatory safety requirements. Re‑making them as separate instruments preserves their regulatory force while changing the form in which they are issued.\n\n- If the ADs impose inspections, modifications or installations (as their titles indicate), the direct costs of complying (parts, labour, downtime) fall on aircraft owners/operators. If compliance has already been completed under earlier versions, there will generally be no additional technical work required by this administrative re‑issue.\n\n- Because the instrument re‑issues the ADs in the same wording, there is no change to the substantive safety obligations. The main changes are administrative: how the ADs are recorded and referenced as instruments.\n\nMechanics of decision and compliance\n\n- Who decides: a CASA delegate (named in the instrument) exercises discretion under the cited CASR subregulation to revoke and re‑issue the listed ADs.\n\n- Who pays: the financial cost of carrying out any AD work (inspections, modifications, part replacement) is borne by aircraft owners/operators and the maintenance organisations they engage.\n\n- What behaviour changes: affected operators must ensure they hold and follow the current re‑made AD instruments (and keep maintenance records showing compliance). Practically, they must check that references in their maintenance manuals and legal paperwork point to the current AD instrument(s) after re‑issuing.\n\nPurpose claims and testing them against practical trade‑offs\n\n- The instrument states (in its note) that ADs are being re‑made in the same form as the latest published editions. That is a claim of a purely administrative re‑issue rather than a technical change.\n\n  - Costs and incentives: the substantive compliance costs remain those originally imposed by each AD (inspection, parts, labour). The re‑issue itself imposes administrative costs on CASA and on operators that must update records and references. These costs are concentrated on affected aircraft owners/operators and maintenance organisations; they are diffuse relative to the broader aviation sector.\n\n  - Implementation risk: the primary risk is administrative — temporary confusion if operators reference old instrument identifiers or if publication channels are not synchronized. There is minimal safety risk if the re‑issued ADs are identical and properly communicated.\n\n  - Bureaucratic discretion: the instrument exercises CASA delegate authority under subregulation 39.001(1) to revoke and re‑make ADs. That power allows CASA to manage how ADs are legally recorded without altering substantive requirements, but it does centralise the formal control of instrument issuance with the delegate.\n\n  - Effects on private choice and markets: because the ADs remain substantively unchanged, there is no direct change to competition, ownership, or the ability of independent maintenance businesses to operate, except insofar as compliance tasks continue to be required and paid for by owners/operators.\n\nSpecific points to note from the Schedule\n\n- A list of ADs for Avro Anson/Avro 19 is provided (AD/ANSON/1 through AD/ANSON/23, with some entries carrying \"Amdt 1\" indicating prior amendments). Two items are marked \"CANCELLED\" in the Schedule (AD/ANSON/4 and AD/ANSON/7). Operators should check the current, re‑made instruments to confirm status and any amendment history.\n\nBottom line\n\n- This is an administrative instrument: CASA revokes a batch of ADs and re‑issues each as a separate instrument in the same form as the current published versions. Operators must ensure they reference and comply with the re‑made ADs; the underlying safety obligations remain unchanged.\n\n(References: instrument text invoking subregulation 39.001(1) and the Schedule listing ADs and AD numbers.)"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-avro-anson-and-avro-19-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-avro-anson-and-avro-19-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-avro-anson-and-avro-19-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-avro-anson-and-avro-19-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-avro-anson-and-avro-19-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-avro-anson-and-avro-19-series-aeroplanes/documents"}}