{"id":"F2006B07774","name":"Airworthiness Directives 2004 - Revocation and Remaking - Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-bombardier-canadair-cl-600-challenger-series-a","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50559,"registerId":"commonwealth-F2006B07774-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 - Bombardier (Canadair) CL-600 (Challenger) 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\nBombardier (Canadair) CL-600 (Challenger) Series Aeroplanes\n\nAD Name AD Number\n\nWindshield and Side Windows Reinforcing T Plates - CANCELLED AD/CL-600/1\n\nElevator Inboard Hinge Fitting - Inspection and Replacement AD/CL-600/2\n\nPassenger Door Interior and Exterior Handles and Latch Mechanism - AD/CL-600/3\n\nAuxiliary Power Unit Load Control Valve - Special Check and Adjustment AD/CL-600/4\n\nMain Landing Gear Brake Assemblies - Inspection and Re-Identification AD/CL-600/5\n\nBranson Fuel Tank - Electrical Harness - Inspection and Modification AD/CL-600/6\n\nHorizontal Stabiliser Pitch Trim Actuator - Modification AD/CL-600/7\n\nLanding Gear Electrical Harnesses - Modification AD/CL-600/8\n\nJunction Box No.2 - Vertical Navigation and Glide Slope Relay - Modification AD/CL-600/9\n\nAutopilot Duplex Servo - Installation of Protective Cover AD/CL-600/10\n\nStick Pusher - Inspection and Modification AD/CL-600/11\n\nThrottle Quadrant Wear Strips - Special Check and Modification - CANCELLED AD/CL-600/12\n\nBrake Control Push-Pull Cable AD/CL-600/13 Amdt 1\n\nEngine Pylon Fuel Feed Tube Assembly - Modification AD/CL-600/14\n\nAileron and Elevator Flutter Dampers AD/CL-600/15 Amdt 1\n\nWing Outboard Flap Vane and Structure - CANCELLED AD/CL-600/16 Amdt 1\n\nFlight Controls - Elevator Cable Inspection AD/CL-600/17\n\nIntroduction of Earthing Point AD/CL-600/18\n\nFire Extinguishing Bottle Squib Wiring AD/CL-600/19\n\nADG Output Harness Chafing AD/CL-600/20\n\nTail Cone Fuel Tank AD/CL-600/21 Amdt 2\n\nEngine Fire Detection, Indication and Extinguishing Systems AD/CL-600/22\n\nBrakes AD/CL-600/23 Amdt 1\n\nGenerator and APU Feeder Wires AD/CL-600/24\n\nThrottle Quadrant AD/CL-600/25 Amdt 1\n\nFlap Actuators AD/CL-600/26\n\nRudder Control Quadrant AD/CL-600/27 Amdt 1\n\nSunstrand Air Driven Generator AD/CL-600/28\n\nHorizontal Stabiliser Trim Actuator AD/CL-600/29\n\n  \nTime Limits and Maintenance Checks AD/CL-600/30\n\nFuel Tank Arcing Prevention AD/CL-600/31\n\nUnderfloor Pressure Bulkhead at FS409.00 AD/CL-600/32 Amdt 2\n\nOverwing Emergency Exit Hatches AD/CL-600/33\n\nFlap Operation AD/CL-600/34 Amdt 2\n\nMain Landing Gear Main Fitting AD/CL-600/35 Amdt 1\n\nElevator Flutter Damper Shear Pins AD/CL-600/36\n\nFlight Spoiler Centre Hinge Fitting AD/CL-600/37 Amdt 1\n\nIDG Cables and Firewall Separator AD/CL-600/38 Amdt 1\n\nFuel Level Sensing Wiring Chafing AD/CL-600/39\n\nElectrical Power - Chafing of IDG Cables AD/CL-600/40\n\nFire Warning Control Unit AD/CL-600/41\n\nLower Wing Plank AD/CL-600/42\n\nCargo Compartment Smoke Detector AD/CL-600/43\n\nPower Transfer Contactors AD/CL-600/44\n\nEngine Support Beam AD/CL-600/45\n\nMain Windshield Fasteners AD/CL-600/46\n\nCenter Tank Fuel Transfer Shutoff Valve AD/CL-600/47\n\nCVR/FDR Paint Stripping AD/CL-600/48\n\nAngle of Attack Transducer AD/CL-600/49\n\nMain Fuel Tank Vent System Modification AD/CL-600/50\n\nChafed IDG Cables AD/CL-600/51\n\nRefuel Floodlight AD/CL-600/52\n\nFuel Migration and Centre of Gravity Limit AD/CL-600/53\n\nCL-600-2B19 RJ Overwing Exit Placards AD/CL-600/54\n\nFlap Vane System AD/CL-600/55\n\nAPU Cooling Air Exhaust AD/CL-600/56\n\nHorizontal Stabilizer Trim Actuator AD/CL-600/57\n\nAileron Stiffness AD/CL-600/58\n\nIDG Cables AD/CL-600/59\n\nFlap Vane Brackets AD/CL-600/60\n\nMain Landing Gear Side-Brace Fitting Shaft AD/CL-600/61","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument does not expand the substantive scope of regulation. It is an administrative re‑issuance: the listed Airworthiness Directives are revoked and re‑made in the same form as their latest published editions. There is no addition of new technical requirements, deadlines, or enforcement powers; obligations on operators and maintainers remain materially the same. The change is procedural (separate instruments and fresh citations), not substantive."},"complexity_factors":["Single statutory power used: subregulation 39.001(1) (simple legal basis)","Administrative action only (revocation and re‑making) with no substantive amendments","Schedule 1 lists 61 ADs (large list but each re‑made in identical form)","Some listed items are marked CANCELLED or show amendment history (Amdt 1, Amdt 2), requiring attention to status when cross‑referencing","Instrument depends on attached ADs matching the 'latest published edition' — reliance on external publication increases implementation dependency","Minimal conditional logic and few cross‑references in the instrument itself"],"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 set of existing Airworthiness Directives (ADs) that relate to the Bombardier (Canadair) CL-600 (Challenger) family of aeroplanes, and to re‑make each of those ADs as a separate legal instrument.\n- The instrument lists the ADs being revoked and re‑made in Schedule 1 (for example, AD/CL-600/1 Windshield and Side Windows Reinforcing T Plates; AD/CL-600/2 Elevator Inboard Hinge Fitting; through to AD/CL-600/61 Main Landing Gear Side‑Brace Fitting Shaft).\n- The note attached to the instrument states that each re‑made AD is in exactly the same form as the latest published edition of that Directive. In short: the content of each AD is not changed here — they are only reissued as separate instruments.\n\n**Who is affected**\n\n- Aircraft operators, owners and maintenance organisations who operate or maintain Bombardier CL-600 (Challenger) series aeroplanes. Those parties are required to comply with ADs affecting their aircraft.\n- Continuing airworthiness managers, licensed engineers and certifying staff who must follow the inspection, modification or other actions mandated in the listed ADs.\n- CASA and its delegates, who administer, record and enforce compliance with ADs.\n\n**Why it matters (practical effects)**\n\n- Legal continuity: the safety requirements set out in the listed ADs remain in force but are re‑issued as separate instruments. Operators must continue to meet the obligations in those ADs.\n- Administrative impact: operators and maintainers may need to update their compliance records, manuals, maintenance programs and document repositories to reflect the re‑issued ADs or their new citations.\n- Enforcement and citation: re‑making the ADs as separate instruments clarifies their status as individual legal instruments and can make referencing, amendment, or future revocation clearer from an administrative and legal standpoint.\n\n**Mechanics and trade‑offs — what the instrument changes vs what it claims to do**\n\n- Claimed purpose (from the instrument): to revoke and re‑make the listed ADs. The instrument states the re‑made ADs are unchanged in substance (they match the latest published editions).\n- Actual change: purely administrative re‑issuance. There is no alteration of technical requirements, compliance deadlines, or the substance of inspections/modifications required by those ADs in this instrument.\n\n**Costs, incentives and implementation risks**\n\n- Who pays: costs fall mainly on operators and maintenance organisations (time and administrative work to update records and ensure citations in manuals are current). No new technical compliance costs are created by this instrument alone.\n- Incentives: there is no new safety or operational requirement introduced that changes operator behaviour beyond maintaining existing compliance. The instrument may make future amendment or targeted revocation of individual ADs easier from CASA's administrative perspective.\n- Opportunity cost / bureaucratic burden: CASA resources are used to reissue and republish separate instruments; operators need to check and, if necessary, update their documentation. This is an administrative reorganisation rather than a policy expansion.\n- Implementation risk: potential for temporary confusion during the transition if operators reference old citations; reliance on accurate republishing (the instrument depends on the re‑made ADs matching the \"latest published edition\").\n\n**Concrete decision and behavioural effects**\n\n- Who decides: a CASA delegate (named in the instrument) exercises the delegated regulatory power.\n- What changes for affected parties: continue to comply with the same technical requirements, but update how those requirements are cited and recorded because each AD now exists as a separate legal instrument (see Schedule 1). There is no change to the substantive safety obligations by this instrument alone.\n\n**Key references in the instrument**\n\n- Power used: subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998.\n- Action taken: revocation and re‑making of the ADs listed in Schedule 1.\n\n"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a procedural remaking instrument with identical substantive scope to the original ADs. The legislation maintains its original purpose of ensuring airworthiness of CL-600 series aircraft through mandatory safety directives."},"complexity_factors":["Single operative provision with straightforward binary structure (revoke and remake)","No defined terms section — relies on external aviation terminology","Heavy reliance on attached schedules (61 separate ADs not reproduced in full)","Cross-reference to Civil Aviation Safety Regulations 1998 subregulation 39.001(1) for authority","Minimal conditional logic — applies universally to specified aircraft type","Note clarifies that technical content remains unchanged, reducing interpretive burden"],"plain_english_summary":"CASA has revoked 61 existing Airworthiness Directives for Bombardier CL‑600 Challenger jets and immediately reissued those same mandatory requirements as new, legally valid instruments so the technical inspections, modifications and replacements remain enforceable. This affects Australian owners, operators and maintenance organisations of CL‑600 series aircraft by keeping the safety obligations in force. Three ADs (AD/CL‑600/1, 12 and 16) are permanently cancelled."},"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-bombardier-canadair-cl-600-challenger-series-a","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bombardier-canadair-cl-600-challenger-series-a/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bombardier-canadair-cl-600-challenger-series-a/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bombardier-canadair-cl-600-challenger-series-a/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bombardier-canadair-cl-600-challenger-series-a/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bombardier-canadair-cl-600-challenger-series-a/documents"}}