{"id":"F2006B07836","name":"Airworthiness Directives 2004 - Revocation and Remaking - DHA-3 (Drover) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-dha-3-drover-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50759,"registerId":"commonwealth-F2006B07836-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 - DHA-3 (Drover) 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\nDHA-3 (drover) Series Aeroplanes\n\nAD Name AD Number\n\nElectrical Installation - Modification AD/DHA-3/1\n\nWing Assembly - Modification AD/DHA-3/2\n\nWing Engine Mount Cross Brace Tube - Modification AD/DHA-3/3\n\nFuel Tank Vent - Modification AD/DHA-3/4\n\nWindscreen Wiper - Modification AD/DHA-3/5\n\nFuel Filter - Modification AD/DHA-3/6\n\nHorizontal Tail Plane Attachments - Modification AD/DHA-3/7\n\nElectrical Cable Insulation - Modification AD/DHA-3/8\n\nBattery Master Switch Insulation - Modification AD/DHA-3/9\n\nHand Brake Installation - Modification AD/DHA-3/10\n\nCANCELLED AD/DHA-3/11\n\nCANCELLED AD/DHA-3/12\n\nHorizontal Tailplane Attachments - Inspection AD/DHA-3/13\n\nFairey-Reed Propellers - Spinner Removal AD/DHA-3/14\n\nRear Fuselage - Elevator Quadrant Installation - Modification AD/DHA-3/15\n\nUndercarriage Bolts P/N U3-129 - Inspection AD/DHA-3/16 Amdt 1\n\nFuselage at Wing Rear Pickups - Modification AD/DHA-3/17\n\nFuselage - Cross Beam and Attachment Brackets at Firewall - Modification AD/DHA-3/18\n\nFuselage - Installation of Strengthened Support Brackets - Lower Centre Engine Mounts AD/DHA-3/19\n\nWing Rib No. 5 - Inspection AD/DHA-3/20\n\nCorrosion of Wing and Centre Section Spar Booms - Inspection AD/DHA-3/21\n\nFlap Link Attachment Bracket (Outer) - Inspection AD/DHA-3/22\n\nFlap Inner Link Attachment Brackets - Inspection AD/DHA-3/23\n\nTailplane Spar and Elevator Hinge Stiffener Bracket - Inspection AD/DHA-3/24 Amdt 1\n\nCentre Section and Wing Spar - Life Limitations AD/DHA-3/25 Amdt 2\n\nFront Seat Restraint Installation - Modification AD/DHA-3/26\n\nWing to Fuselage Attachments - Inspection AD/DHA-3/27\n\nCentre Section Main Spar Upper Boom Attach Fitting - Inspection AD/DHA-3/28","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument explicitly remakes each Airworthiness Directive \"in exactly the same form as\" the latest published edition, so substantive obligations on affected aircraft, operators and maintainers are unchanged. The primary effect is administrative (separating each AD into its own instrument), which may alter citation or record-keeping but not the underlying safety requirements."},"complexity_factors":["Administrative action: revocation and remaking of existing instruments rather than introducing new safety requirements","Large number of listed ADs (multiple items, including some amended and some cancelled)","Dependency on the ‘latest published edition’ of each AD (external publication reference)","Delegated decision-maker exercising power under subregulation 39.001(1)","Potential operational impact on operators through citation, filing and compliance record adjustments"],"plain_english_summary":"This instrument revokes a list of Airworthiness Directives for DHA-3 (Drover) series aeroplanes and remakes each one as a separate instrument in the exact form of its latest published edition. It is issued by a delegate of the Civil Aviation Safety Authority and affects owners, operators and maintenance organisations of DHA-3 aircraft, who continue to be required to comply with those ADs; the change is administrative in form rather than substantive in content."},"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":2,"scope_assessment":{"changed":false,"description":"The instrument explicitly states it is remaking the directives 'in exactly the same form' as the latest published edition. This is purely administrative restructuring with no expansion of regulatory scope or substantive change to safety requirements."},"complexity_factors":["Very short instrument (under 500 words)","No defined terms section — relies on external understanding of 'Airworthiness Directive' and aircraft terminology","Simple binary structure: revoke (a) and remake (b)","No conditional logic or exceptions — just a straightforward list in Schedule 1","Cross-references are minimal: only cites subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 as the enabling power","Schedule 1 is a simple table with 28 rows — no nested provisions"],"plain_english_summary":"This instrument is an administrative tidy-up by CASA that revokes and immediately remakes 28 Airworthiness Directives for the vintage DHA‑3 Drover. It affects Drover owners, operators and maintenance engineers but does not change any safety requirements — the directives are reissued “in exactly the same form.” Two previously cancelled directives remain cancelled. The change improves legal organisation and future reference of these mandatory safety rules."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dha-3-drover-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dha-3-drover-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dha-3-drover-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dha-3-drover-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dha-3-drover-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dha-3-drover-series-aeroplanes/documents"}}