{"id":"F2006B07838","name":"Airworthiness Directives 2004 - Revocation and Remaking - DHC-3 (Otter) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-dhc-3-otter-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50766,"registerId":"commonwealth-F2006B07838-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 - DHC-3 (Otter) 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\nDHC-3 (Otter) Series Aeroplanes\n\nAD Name AD Number\n\nRudder Quadrant, Rudder Pedal Linkage, Tail Wheel Assembly and Rear AD/DHC-3/1\n\nRear Cargo Door AD/DHC-3/2\n\nMain Undercarriage Compression Strut AD/DHC-3/3\n\nCargo Door Handles AD/DHC-3/4\n\nBooster Pump, Fuselage Former Cap Strips, Rear Cabin Seats AD/DHC-3/5\n\nRudder Control AD/DHC-3/6\n\nEngine Breather Drain Box AD/DHC-3/7\n\nWith Skin Riveting and Flap Hydraulic System AD/DHC-3/8\n\nTailplane Trim Indicator AD/DHC-3/9\n\nExhaust System AD/DHC-3/10\n\nElevator Quadrant, Inboard Nose Flaps, Empennage, Aileron Centre Hinge AD/DHC-3/11\n\nFlap Hydraulic Jack AD/DHC-3/12\n\nPropeller Counterweight Bearing Shafts AD/DHC-3/13\n\nTailplane Fork Attachment Fitting AD/DHC-3/14\n\nEngine Driven Fuel Pump AD/DHC-3/15\n\nFlap Control Rod Sub-Assembly AD/DHC-3/16\n\nEngine Cooling AD/DHC-3/17\n\nWing Strut Spar AD/DHC-3/18\n\nFuel Line Chafing AD/DHC-3/19\n\nMixture Control Lever Quadrant AD/DHC-3/20\n\nRudder Pedal Support AD/DHC-3/21\n\nElevator Tab Control Arm AD/DHC-3/22\n\nVNE Placard AD/DHC-3/23\n\nMain Landing Gear Fuselage Attachment Bolts AD/DHC-3/24\n\nWing Strut and Attachments - Retirement Lives AD/DHC-3/25\n\nTailplane Hinge Bolts AD/DHC-3/26\n\nFront Seat Restraint Installation AD/DHC-3/27\n\nFront Fuselage - Windshield Post AD/DHC-3/28\n\nEngine Mounting Frame AD/DHC-3/29\n\n  \nElevator Connecting Rod AD/DHC-3/30\n\nControl Column Cracking AD/DHC-3/31\n\nUtility Seat Forward Leg Positive Lock Installation AD/DHC-3/32 Amdt 1\n\nWing Strut to Fuselage Tie Bar AD/DHC-3/33\n\nTailplane Main Rib Forward Flange and Forward Lower Flange AD/DHC-3/34 Amdt 1\n\nElectrical System AD/DHC-3/35\n\nFire Detection and Extinguishing System AD/DHC-3/36\n\nMagneto Cannon Plug AD/DHC-3/37\n\nElectrically Heated Engine Pneumatic Lines AD/DHC-3/38\n\nElevator Servo Tab AD/DHC-3/39","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument performs a pure procedural remake with no expansion of scope. The Note explicitly confirms each Directive is being re-made 'in exactly the same form as appears in the latest published edition.' The scope remains limited to the 39 specific technical safety requirements for DHC-3 Otter aircraft."},"complexity_factors":["Very short instrument (under 500 words)","No defined terms section - relies on external definitions in the Civil Aviation Safety Regulations 1998","Simple binary structure: (a) revoke, (b) remake","No conditional logic or exceptions","Schedule 1 is a straightforward table listing 39 Directive titles and numbers","Cross-references only to subregulation 39.001(1) of the CASR 1998 and the attached Directives themselves","Note explicitly states no substantive changes: 're-made in exactly the same form'"],"plain_english_summary":"This instrument cancels and immediately reissues 39 existing Airworthiness Directives for DHC‑3 Otter aeroplanes in exactly the same form, restoring them as current, legally enforceable safety orders. It affects DHC‑3 owners, operators, maintenance organisations and CASA by ensuring required inspections, repairs and modifications remain enforceable. The change is a legislative housekeeping step to correct the legal standing of the directives under current regulatory powers."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope of obligations. It expressly revokes the listed ADs and re-makes each \"in exactly the same form\" as the latest published edition (note to instrument), so existing compliance duties for DHC-3 owners/operators remain unchanged; the change is procedural and documentary rather than substantive."},"complexity_factors":["Legal mechanism is straightforward: revocation and re‑making under delegated power (acting under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998).","Number of instruments: Schedule 1 lists 39 separate ADs to be re-made, increasing administrative load for operators and regulators to track separate instruments.","No substantive change claimed: the note states each AD is re-made \"in exactly the same form as appears in the latest published edition of the Directive\", reducing legal-substantive complexity but raising document-management tasks.","Transition risk: simultaneous revocation and re-issuance can create short-term citation and compliance confusion as references move from consolidated ADs to individually re-made instruments.","Centralised decision-making: a single CASA delegate signs the instrument (David Alan Villiers), concentrating decision authority and limiting multi-authority variation.","Dependence on published editions and attachments: the operation and legality depend on the accuracy of the attached, latest published AD editions listed in Schedule 1."],"plain_english_summary":"This instrument revokes a group of Airworthiness Directives (ADs) that apply to DHC-3 (Otter) aeroplanes and re-issues each AD as a separate, identical instrument. It is an administrative action taken under the Civil Aviation Safety Regulations and affects DHC-3 owners, operators and maintenance organisations who must continue to comply with the same AD requirements; the decision is made by a CASA delegate and the cost is largely compliance and record‑keeping."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dhc-3-otter-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dhc-3-otter-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dhc-3-otter-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dhc-3-otter-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dhc-3-otter-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dhc-3-otter-series-aeroplanes/documents"}}