{"id":"F2006B08023","name":"Airworthiness Directives 2004 - Revocation and Remaking - Short SC7 (Skyvan) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-short-sc7-skyvan-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115089,"registerId":"commonwealth-F2006B08023-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Short SC7 (Skyvan) 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\nShort SC7 (Skyvan) Series Aeroplanes\n\nAD Name AD Number\n\nLeft Front Engine Shockmount - Inspection and Replacement AD/SC7/1\n\nFlying Controls - Inspection and Modification AD/SC7/2\n\nFlap - Aileron Shroud Attach Lugs - Modification AD/SC7/3\n\nEngine Plenum Chamber Flexible Drain Lines - Installation AD/SC7/4\n\nTKS De-Icing Plumbing - Modification AD/SC7/5\n\nGuards at Rear of Pilots Seats - Installation AD/SC7/6\n\nRudder Bar Assembly - Modification AD/SC7/7\n\nFlap Control Mechanism - Inspection and Lubrication AD/SC7/8 A\n\nFront (Pilot) Seats Restraint Installations - Modification AD/SC7/9\n\nAutomatic Pilot Aileron Servo Control Cable - Inspection AD/SC7/10\n\nAir/Ground Lever Spring Heel Block - Inspection AD/SC7/11\n\nFin/Tailplane Attachment - Inspection AD/SC7/12\n\nFatigue Life Limitations AD/SC7/13 Amdt 3\n\nFlap Mechanism Support Structure - Inspection and Modification AD/SC7/14\n\nInner Flap - Replacement of Lifed Items and Modification of Flap Structure AD/SC7/15 C\n\nWing Lower Skin/Wing Lift Strut Fairing - Inspection AD/SC7/16\n\nOuter Flap - Replacement of Lifed Items and Reinforcement of Flap Structure AD/SC7/17\n\nGround/Air Lever Spring Heel Block - Modification AD/SC7/18\n\nFlight Control Rods AD/SC7/19 Amdt 1\n\nWing Rear Spar Fuselage Frame Attachment Bushes - CANCELLED AD/SC7/20 Amdt 2\n\nWing Attachment Bushes - CANCELLED AD/SC7/21\n\nMain Landing Gear Brake Flange AD/SC7/22\n\nMain Landing Gear Lever AD/SC7/23\n\nMain Landing Gear Shock Absorber Attachment Pin AD/SC7/24\n\nBrake Unit Friction Pads AD/SC7/25\n\nWing Attachment Bushes in Fuselage Front and Rear Spar Frames AD/SC7/26 Amdt 2\n\nFatigue Life Limitations on Aircraft Subjected to Special Flight Profiles AD/SC7/27 Amdt 3\n\nFlight Control Trim Chain Connecting Link AD/SC7/28\n\nFlight Control Systems Rods AD/SC7/29","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument does not change the substantive scope or technical requirements of the listed Airworthiness Directives. It formally revokes the bundled ADs and re‑issues each as a separate, identical instrument (see Schedule 1 and instrument note). Cancellations already indicated in the Schedule are preserved. The effect is administrative: who decides (CASA delegate under subreg 39.001(1)) and who pays or acts (aircraft owners/operators/maintenance organisations) remain the same."},"complexity_factors":["Administrative re-issuance rather than substantive amendment: ADs are revoked and re-made in identical form (note in instrument).","Many separate ADs listed in Schedule 1, some showing amendment markers (e.g. Amdt 1/2/3) or 'CANCELLED', increasing instrument count and tracking needs.","Authority and procedure based on subregulation 39.001(1), so delegation and formal revocation/creation steps matter for legal validity.","Operational compliance burden rests with operators and maintenance organisations who must continue inspections, modifications and record-keeping under each AD.","Document management overhead for regulators, operators and registries because individual ADs are now separate instruments rather than a bundled instrument."],"plain_english_summary":"This instrument, made by a Civil Aviation Safety Authority delegate under subregulation 39.001(1), revokes a package of Airworthiness Directives for the Short SC7 (Skyvan) and re‑issues each one as a separate instrument in the identical form. It affects aircraft owners, operators and maintenance organisations required to carry out inspections, modifications or replacements in those ADs. The change is administrative: substantive technical and compliance requirements remain as previously published, while legal form and instrument management are adjusted."},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This instrument maintains the original scope of aircraft safety regulation. It is purely an administrative remaking of existing technical requirements under updated legislative authority. The substantive safety requirements remain identical to the previous versions ('re-made in exactly the same form')."},"complexity_factors":["Multiple cross-references to 29 separate Airworthiness Directives (ADs) that are attached but not reproduced in full in this instrument","Relies on external knowledge of Civil Aviation Safety Regulations 1998 (specifically subregulation 39.001(1))","Uses technical aviation terminology throughout (e.g., 'plenum chamber', 'aileron servo', 'lifed items', 'fatigue life limitations')","Contains amendments and cancellations mixed with new issuances (some ADs are marked 'Amdt 3', 'CANCELLED')","Conditional logic implied: the revocation and remaking applies only to the specific aircraft series mentioned"],"plain_english_summary":"This is a technical aviation safety instrument that updates maintenance rules for a specific type of aircraft called the Short SC7 Skyvan (a small twin-engine cargo plane). The Civil Aviation Safety Authority (CASA) is revoking (cancelling) 29 old safety directives and immediately reissuing them as new, separate legal instruments. This is essentially a paperwork exercise to keep the safety rules current and properly formatted under modern regulations. The directives cover everything from inspecting engine shock mounts and flight controls to replacing worn-out parts like brake pads and wing attachment bushes. If you own, operate, or maintain a Skyvan aircraft, these rules tell you what inspections and repairs you must do to keep the plane airworthy."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-short-sc7-skyvan-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-short-sc7-skyvan-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-short-sc7-skyvan-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-short-sc7-skyvan-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-short-sc7-skyvan-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-short-sc7-skyvan-series-aeroplanes/documents"}}