{"id":"F2006B08047","name":"Airworthiness Directives 2004 - Revocation and Remaking - Twin Commander (Gulfstream/Rockwell/ Aerocommander 500 600 and 700) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-twin-commander-gulfstream-rockwell-aerocommand","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115127,"registerId":"commonwealth-F2006B08047-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 - Twin Commander (Gulfstream/Rockwell/ Aerocommander 500 600 and 700) 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\nTwin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700)\n\nSeries Aeroplanes\n\nAD Name AD Number\n\nWing Rib - Reinforcement AD/AC/1\n\nAugmentor Tubes - Installation of New Type Supports AD/AC/2\n\nAileron Bellcrank Castings at Wing Station 196 - Replacement AD/AC/3\n\nMain Landing Gear Upper Retaining Pins - Replacement AD/AC/4\n\nLanding Gear Selector Valve - Removal of AN 6207 Check Valve AD/AC/5\n\nFuel Vent and Vapour Return Lines - Modification AD/AC/6\n\nRudder Torque Tube - Inspection AD/AC/7\n\nPower Brake Valve - Modification AD/AC/8\n\nVertical and Horizontal Stabiliser - Spar Reinforcement AD/AC/9\n\nFuel Line Routing - Modification AD/AC/10\n\nFlap Pulley Assembly Right Inboard Station 13.625 - Modification AD/AC/11\n\nHorizontal Stabiliser - Modification AD/AC/12\n\nHydraulic and Engine Oil S/O Valve Circuit Breaker - Insulation AD/AC/13\n\nClear Vinyl Covers in Cabin Interior - Removal AD/AC/14\n\nCentre Wing - Rear Spar Reinforcement AD/AC/15\n\nBaggage Compartment and Rear Cabin Areas - Corrosion Inspection and AD/AC/16\n\nLanding Gear Truss Attach Angle - Inspection AD/AC/17 A\n\nBattery Relay Terminal - Insulation AD/AC/18\n\nThrottle Control Rod Ends - Inspection and Replacement AD/AC/19\n\nRudder Trim Tab Hinge Mount - Inspection AD/AC/20\n\nCANCELLED AD/AC/21\n\nInduction Air Control Valves and Mounting Shafts - Replacement AD/AC/22\n\nMain Landing Gear Struts - Inspection and Modification AD/AC/23\n\nFuel Pressure Gauge Vent Drain - Installation AD/AC/24\n\nCircuit Breaker Panel - Insulator Inspection AD/AC/25\n\nElevator Torque Tube - Inspection and Modification AD/AC/26\n\nMain Landing Gear Actuating Cylinder Body - Inspection AD/AC/27\n\nMain Landing Gear Truss - Inspection AD/AC/28\n\nFuel Sump Casting P/N 4630068 - Inspection AD/AC/29 Amdt 2\n\n  \nReplacement of Fuel System Aluminium Drain Tubing and Fittings and Wing AD/AC/30\n\nCANCELLED AD/AC/31 Amdt 4\n\nAileron Cable Drum Cable Retainer - Modification AD/AC/32\n\nCANCELLED AD/AC/33 Amdt 1\n\nMain Landing Gear Upper Bearing - Modification AD/AC/34\n\nRudder Torque Tube - Modification AD/AC/35\n\nWing Front Spar Lower Cap - Inspection AD/AC/36 Amdt 2\n\nCockpit Windows - Modification AD/AC/37\n\nEmergency Exit Latch - Inspection AD/AC/38\n\nWing Front Spar Lower Cap - Inspection AD/AC/39\n\nEngine Mount Yoke - Inspection AD/AC/40\n\nNose Gear Support Structure - Inspection AD/AC/41\n\nWing Main Spar Lower Cap W.S. 24 AD/AC/42 Amdt 7\n\nElevator Servo Cable Guard Plate - Installation AD/AC/43\n\nEngine Tailpipe Assemblies - Inspection and/or Replacement AD/AC/44\n\nNose Wheel Tyre - Inspection and Replacement AD/AC/45\n\nSeparation of Electrical Wiring from Fuel Line AD/AC/46\n\nFront Seat Restraint Installation - Modification AD/AC/47\n\nRudder Control Balance - Inspection AD/AC/48\n\nWing Main Spar - Inspection AD/AC/49\n\nUnfeathering Pump Supply Line - Replacement AD/AC/50\n\nCabin Differential Pressure Limitations AD/AC/51\n\nPilot Compartment Side Windows - Replacement AD/AC/52\n\nPressurised Cabin Structure - Inspection and Modification AD/AC/53\n\nAileron Trim Tab - Inspection and Repair AD/AC/54\n\nCANCELLED AD/AC/55\n\nElevator Control System Bob Weight Installation - Inspection and Modification AD/AC/56 Amdt 3\n\nPre-Certification Requirements - Modifications AD/AC/57\n\nElevator Control System Bob Weight Installation - Inspection and Modification - AD/AC/58 Amdt 2\n\nFlap System - Flap Control Bracket - Inspection and Modification AD/AC/59 Amdt 1\n\nAft Facing Seats - Placard - Installations AD/AC/60\n\nElevator Trim Sprocket Assembly - Inspection and Modification AD/AC/61 Amdt 1\n\nForward and Aft Inboard Wing Spar Cap Rivets - Inspection and Replacement AD/AC/62\n\nElectric Elevator Trim Speed - Modification AD/AC/63\n\nFatigue Life Limitation - Pressurised Fuselage AD/AC/64\n\nWing Spar Fillet Screws - Inspection and Replacement AD/AC/65\n\n  \nWing Fatigue Life Limitation AD/AC/66 Amdt 8\n\nGoodyear Fuel Cells - Inspection AD/AC/67\n\nElevator Bungee Springs - Inspection AD/AC/68\n\nMain Landing Gear Torque Link Pin Retaining Bolt - Inspection AD/AC/69\n\nEngine Oil Breather Line - Modification AD/AC/70\n\nAft Engine Mount Attachment - Inspection AD/AC/71\n\nMain Cabin Door Bayonet Rigging - Inspection AD/AC/72\n\nWing Fasteners - Modification AD/AC/73\n\nFairleads On Aft Fuselage Frames - Installation AD/AC/74 Amdt 2\n\nMain Cabin Door Fasteners - Inspection AD/AC/75\n\nEngine Control Cables, Jam Nuts - Modification AD/AC/76\n\nInduction Air Elbow Duct - Replacement, Exhaust System - Inspection AD/AC/77\n\nFlight Control Chain Connector Link - Inspection AD/AC/78\n\nRudder Control Cable Fraying AD/AC/79 Amdt 2\n\nAileron Leading Edge Skin - Modification AD/AC/80 Amdt 1\n\nElevator Trim Tab AD/AC/81 Amdt 1\n\nEngine Isolator Assembly- Inspection and/or Replacement AD/AC/82\n\nCorrosion of Wing Lower Spar Cap AD/AC/83 Amdt 8\n\nEmpennage Attachment AD/AC/84 Amdt 1\n\nFlight in Icing Conditions AD/AC/85 Amdt 1\n\nWing Main Spar Lower Cap Microstructure AD/AC/86 Amdt 1\n\nWing Main Spar Steel Strap Corrosion AD/AC/87\n\nFlap System AD/AC/88 Amdt 1\n\nAileron Control System - CANCELLED AD/AC/89\n\nWing Station 39 Wing Ribs AD/AC/90\n\nWing - Main Spar Lower Cap Forward Flange at Wing Station 96 AD/AC/91\n\nWing Skin Near Main Landing Gear AD/AC/92\n\nWing to Fuselage Attachment AD/AC/93 Amdt 1\n\nAirspeed in Turbulence AD/AC/94\n\nBleed Air System Leak Check AD/AC/95\n\nNose Landing Gear Bolt AD/AC/96 Amdt 1\n\nAircraft Flight Manual, Flight into Icing Conditions AD/AC/97\n\nOperation of Deicing Boots AD/AC/98\n\nWing and Fuselage Structure AD/AC/99","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The instrument does not change substantive scope or obligations: it revokes listed ADs and reissues each in identical form (as stated), so existing mandatory airworthiness requirements continue unchanged. The effect is administrative/legal form rather than a change in regulatory coverage."},"complexity_factors":["Large number of ADs listed (many individual items in Schedule 1), increasing administrative tracking burden.","Some entries include amendment history (e.g. 'Amdt 2', 'Amdt 8') and cancellations, requiring attention to version control.","Instrument relies on subregulation 39.001(1) as the legal power to revoke and remake ADs, a single-step legal mechanism.","Remaking ADs in identical form preserves substantive technical requirements but shifts how obligations are issued (separate instruments), affecting record-keeping and compliance systems.","Potential for operational complexity arises from needing to reference many separately re-made instruments rather than a consolidated instrument.","Low technical drafting complexity — no new technical requirements are introduced in this instrument itself."],"plain_english_summary":"This instrument revokes a long list of existing Airworthiness Directives for Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600 and 700) series aeroplanes and remakes each one as a separate instrument in the exact form of its latest published edition. \n\nAircraft owners, operators, maintenance organisations and regulators remain subject to the same mandatory inspection and modification requirements; the change is primarily administrative and may require updates to compliance records and how obligations are tracked."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The scope remains precisely limited to the administrative restructure of existing Airworthiness Directives for the specified aircraft series. The instrument explicitly states it is remaking directives 'in exactly the same form'—there is no expansion of regulatory scope or substantive change to safety requirements."},"complexity_factors":["Single, clear purpose: revocation and remaking of existing instruments","No conditional logic or nested exceptions in the main instrument","Straightforward tabular schedule listing 98 directives by name and number","Minimal cross-referencing (only refers to subregulation 39.001(1) of CASR 1998)","No defined terms section in the instrument itself","Note explicitly states directives are remade 'in exactly the same form'—no substantive changes to interpret","Structure is mechanical: (a) revoke, (b) remake, plus schedule"],"plain_english_summary":"This CASA safety order revokes 98 existing Airworthiness Directives for Twin Commander 500/600/700 series aircraft and reissues them as 98 separate legal instruments. The technical content and mandatory safety requirements remain unchanged.\n\nIt affects owners, operators and maintenance engineers of these aircraft because ADs are compulsory instructions for inspections, repairs and modifications; this is primarily a legal housekeeping exercise reorganising how those unchanged obligations are documented."},"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-twin-commander-gulfstream-rockwell-aerocommand","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-twin-commander-gulfstream-rockwell-aerocommand/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-twin-commander-gulfstream-rockwell-aerocommand/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-twin-commander-gulfstream-rockwell-aerocommand/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-twin-commander-gulfstream-rockwell-aerocommand/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-twin-commander-gulfstream-rockwell-aerocommand/documents"}}