{"id":"F2006B07785","name":"Airworthiness Directives 2004 - Revocation and Remaking - C.A.C. CA-6 (Wackett Trainer) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-6-wackett-trainer-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50595,"registerId":"commonwealth-F2006B07785-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 - C.A.C. CA-6 (Wackett Trainer) 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\nC.A.C. CA-6 (Wackett Trainer) Series Aeroplanes\n\nAD Name AD Number\n\nTail Wheel Stabiliser Locknut - Inspection AD/CA-6/1\n\nFuel Selector Cock - Inspection AD/CA-6/2\n\nMain Plane Inspection AD/CA-6/3 Amdt 1","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The legislation performs exactly the function described in its title — revoking and remaking specific Airworthiness Directives for one aircraft type. The scope is narrow and precisely targeted, with the explicit note confirming no expansion of content or purpose."},"complexity_factors":["Very short instrument (under 300 words)","Only 3 specific directives referenced, all contained in a simple schedule","Single operative provision with straightforward (a)/(b) structure","No defined terms section","No cross-references to other legislation beyond the enabling regulation (subregulation 39.001(1))","No conditional logic or exceptions — purely administrative revocation and remaking","Note explicitly states no substantive change to content"],"plain_english_summary":"This document is a formal order from the Civil Aviation Safety Authority (CASA) that **revokes and reissues three specific safety rules** for a particular type of vintage Australian aircraft called the **C.A.C. CA-6 (Wackett Trainer)**.\n\n**What it does:**\n- **Revokes** (cancels) three existing Airworthiness Directives — these are legally binding safety instructions that aircraft owners must follow\n- **Re-makes** those same three directives as fresh, standalone legal instruments\n\n**The three safety rules cover:**\n- **AD/CA-6/1**: Inspecting a locknut on the tail wheel stabiliser\n- **AD/CA-6/2**: Inspecting the fuel selector cock (a valve that controls fuel flow)\n- **AD/CA-6/3 Amdt 1**: Inspecting the main plane (the main wing structure)\n\n**Who it affects:**\n- Owners and operators of C.A.C. CA-6 Wackett Trainer aircraft — a World War II-era trainer plane designed and built in Australia\n- Maintenance engineers who work on these aircraft\n\n**Why it matters:**\nAirworthiness Directives are **mandatory safety fixes**. When CASA \"remakes\" directives like this, it's usually doing housekeeping — ensuring the legal instruments remain valid and properly formatted under current regulations, without changing the actual safety requirements. The note confirms these are being reissued \"in exactly the same form\" as before, so the technical requirements haven't changed.\n\nThis is essentially **regulatory maintenance** — keeping the paperwork tidy so the safety rules stay enforceable."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope of the listed Airworthiness Directives. It revokes the named ADs and re-makes each as a separate instrument in exactly the same form as the latest published edition (Schedule 1; Note). The technical obligations and who must comply therefore remain as set out in the re-made ADs."},"complexity_factors":["Administrative nature: instrument simply revokes and re-issues existing ADs in the same form (Note)","Legal authority citation: reliance on subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998","Need to consult attachments for substantive technical obligations (the ADs themselves are attached and not reproduced in full here) (Schedule 1; Note)","Potential for brief operational confusion about which document governs compliance during the revocation/re-making step"],"plain_english_summary":"What this instrument does\n\n- The Civil Aviation Safety Authority (CASA) delegate, David Alan Villiers, uses a power in the Civil Aviation Safety Regulations 1998 (subregulation 39.001(1)) to cancel several Airworthiness Directives (ADs) and then re-issue each of those ADs as separate legal instruments (see first paragraph and Schedule 1). \n\nWho is affected\n\n- Owners, operators and maintainers of C.A.C. CA-6 (Wackett Trainer) series aeroplanes. The Schedule lists three specific ADs being revoked and re-made: Tail Wheel Stabiliser Locknut - Inspection (AD/CA-6/1); Fuel Selector Cock - Inspection (AD/CA-6/2); and Main Plane Inspection (AD/CA-6/3 Amdt 1) (Schedule 1).\n\nHow it works mechanically\n\n- The delegate revokes the existing ADs listed in Schedule 1 and simultaneously makes each of those ADs again as separate instruments attached to this instrument (first paragraph (a) and (b); Schedule 1). A note in the instrument states that each attached AD is re-made in exactly the same form as the latest published edition of that Directive (Note). The instrument is signed and dated by the delegate (David Villiers, 20 December 2004).\n\nWhy it matters (stated purpose and practical effects)\n\n- The stated action is administrative: to revoke the listed ADs and re-issue them as separate instruments (first paragraph; Schedule 1). The instrument itself says the re-made ADs are identical to the latest published versions (Note). Practically, that means the technical compliance obligations in those ADs (inspections for tail wheel stabiliser locknut, fuel selector cock, and main plane) remain in force in the form re-issued. Owners/operators remain responsible for meeting the inspection requirements set out in the re-made ADs (Schedule 1 and Note).\n\nWho pays, who decides, and what changes in behaviour\n\n- Who decides: a CASA delegate acting under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 makes the revocation and re-making decision (first paragraph). \n- Who pays / compliance burden: aircraft owners/operators and maintenance organisations bear the cost of complying with the inspection ADs listed in the Schedule. This instrument does not state any change to those technical or financial obligations; it re-issues the directives in the same form (Schedule 1; Note). \n- Behaviour change: there is no stated substantive change to inspection or maintenance requirements in this instrument itself — affected parties should continue to follow the content of the re-made ADs (Note).\n\nImplementation, discretion and risks to watch\n\n- Administrative discretion: the delegate has the administrative power to revoke and re-make ADs under the cited regulation (subregulation 39.001(1)). The instrument exercises that power to re-issue the listed ADs (first paragraph (a) and (b)).\n- Implementation risk / compliance friction: because the instrument revokes and simultaneously re-issues the ADs, there is some scope for temporary confusion about which document to rely on for compliance. The Note aims to reduce that risk by stating the re-made ADs are identical to the latest published editions (Note). \n- Need to consult attachments: the technical requirements and exact compliance dates remain in the attached ADs themselves; this instrument is administrative and does not reproduce those technical requirements (Schedule 1; Note).\n\nTrade-offs and opportunity costs (source-grounded)\n\n- The instrument appears to be an administrative re-issuance rather than a change in technical regulation. The principal trade-off is administrative effort (CASA and regulated entities must record the new instruments and ensure they rely on the re-made ADs) versus any benefit from having the ADs issued as separate instruments. The instrument itself does not set out transitional provisions or cost estimates; it only records the revocation and re-making (first paragraph; Schedule 1; Note)."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-6-wackett-trainer-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-6-wackett-trainer-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-6-wackett-trainer-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-6-wackett-trainer-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-6-wackett-trainer-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-6-wackett-trainer-series-aeroplanes/documents"}}