{"id":"F2006B07770","name":"Airworthiness Directives 2004 - Revocation and Remaking - Boeing 747 Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-boeing-747-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50545,"registerId":"commonwealth-F2006B07770-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 - Boeing 747 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\nBoeing 747 Series Aeroplanes\n\nAD Name AD Number\n\nTransmission Assembly - Inboard Trailing Edge Flap Drive - CANCELLED AD/B747/1\n\nFuselage - Structural Modification AD/B747/2\n\nTrailing Edge Flap System - Inspection - CANCELLED AD/B747/3\n\nToilet Areas - Inspection and Modification AD/B747/4\n\nFlap Installation - Inspection and Modification AD/B747/5\n\nTrailing Edge Flap Tracks - CANCELLED AD/B747/6\n\nFuselage Skin Lap Under Wing to Body Fairing - CANCELLED AD/B747/7 Amdt 2\n\nFuel System - Inspection AD/B747/8\n\nFuel Valve Actuator - Modification AD/B747/9\n\nPressurisation Outflow Valves - Inspection AD/B747/10 Amdt 1\n\nEscape Slide Cool Gas Generator Propellant Cartridge - Inspection AD/B747/11 Amdt 1\n\nFuselage - Cabin Floor Structure - Inspection - CANCELLED AD/B747/12\n\nCargo Compartment Lining Depressurisation Vent Panel - Inspection and Rework AD/B747/13\n\nMain Deck Pressure Web - Fuselage Sta. 1265 to 1480 - Inspection - AD/B747/14 Amdt 1\n\nTrailing Edge Flap Track Fuse Bolt - Inspection and Replacement AD/B747/15 Amdt 1\n\nNacelle Strut Midspar Fuse Pins AD/B747/16 Amdt 3\n\nInboard Engine Strut-To-Diagonal Brace Attach Fitting AD/B747/17 Amdt 2\n\nLower Cargo Doorway Lower Sill Truss and Latch Support Fitting - Inspection AD/B747/18\n\nLightning Protection of Fuel System - Modification AD/B747/19\n\nInboard Pylon Diagonal Brace Forward Fuse Pins - CANCELLED AD/B747/20 Amdt 1\n\nNacelle Strut Forward Engine Mount Bulkhead AD/B747/21 Amdt 3\n\nEscape Slide/Raft Lanyard Assembly - Inspection AD/B747/22\n\nOutboard Engine Strut Diagonal Brace Forward Clevis Root - Inspection and AD/B747/23\n\nRear Fuselage Stringers S18 and S19 - Modification AD/B747/24\n\nWing Leading Edge Flap System - Modification AD/B747/25\n\nDescent Device Handle Strap - Inspection and Replacement AD/B747/26\n\nEscape Slide Flapper Valve - Modification AD/B747/27\n\nMain Deck Pressure Web and Floor Beams - Inspection and Modification AD/B747/28 Amdt 3\n\nFairing Mounted Escape Slide Firing Mechanism - Rigging Revision AD/B747/29\n\n  \nOff-Wing Slides Mechanical Restraints - Modification AD/B747/30\n\nAileron Control System - Modification AD/B747/31\n\nWing Landing Gear Jury Strut Spindle AD/B747/32 Amdt 1\n\nWing Trailing Edge Flap Tracks AD/B747/33 Amdt 2\n\nSupplemental Structural Inspection Program AD/B747/34 Amdt 3\n\nFront Spar Pressure Bulkhead Chord Reinforcement and Drag Splice Fitting AD/B747/35\n\nFrame to Tension Tie Joint Body Station 760 or 780 AD/B747/36 Amdt 1\n\nNose Gear Wheel Well Forward Corner - CANCELLED AD/B747/37 Amdt 1\n\nBody Station 1241 Bulkhead Splice AD/B747/38 Amdt 4\n\nNacelle Strut Diagonal Brace Fuse Pin AD/B747/39 Amdt 2\n\nTrailing Edge Flap Tracks AD/B747/40 Amdt 7\n\nFuselage Section 41, Stringer 6 - Stations 340 to 400 AD/B747/41 Amdt 1\n\nEvacuation Slides/Rafts - Modification AD/B747/42\n\nDoor Mounted Escape Slide/Raft Girt Bar Attachment Assembly - Inspection AD/B747/43\n\nInboard Elevator Control Rods and Aft Quadrant AD/B747/44 Amdt 1\n\nAft Pressure Bulkhead Damage AD/B747/45\n\nForward Fuselage Pressure Shell AD/B747/46 Amdt 5\n\nUpper Deck Type A Door - Power and Slide Deployment Mechanism Fasteners AD/B747/47\n\nNacelle Strut Midspar Fitting Lugs AD/B747/48 Amdt 2\n\nVertical Fin Access Cover Installation AD/B747/49\n\nInboard Pylon Upper Link AD/B747/50\n\nFuselage Frames - Aft Cargo Bay AD/B747/51\n\nLower Fuselage Frames AD/B747/52\n\nLongitudinal Skin Lap Joint and Body Frame Corrosion and Cracking AD/B747/53 Amdt 3\n\nFlap Track Bolts AD/B747/54 Amdt 1\n\nNacelle Strut Attachment Fitting Bolts AD/B747/55\n\nFuselage - Tail Section Structure AD/B747/56\n\nEngine Pylon Midspar Attach Fitting - CANCELLED AD/B747/57 Amdt 1\n\nHydraulic Fuse AD/B747/58\n\nFuselage Upper Body Tear Strap Disbonding AD/B747/59\n\nCeiling Lighting Wire Bundles AD/B747/60\n\nRear Pressure Bulkhead AD/B747/61 Amdt 2\n\nFlap Carriage Spindles and Aft Link Assembly AD/B747/62 Amdt 2\n\nAPU Fuel Drain System AD/B747/63\n\nWing Centre Section - Front Spar Lower Chord Splice Fitting Bolts AD/B747/64 Amdt 4\n\nFuselage - Main Frame - Tail Section 48 AD/B747/65\n\n  \nLower Lobe Cargo Door Locking System AD/B747/66 Amdt 2\n\nFlap Track Fail Safe Bar Fastener Hole - CANCELLED AD/B747/67\n\nEngine Overheat, Fire Detection and Fire Extinguishing Systems AD/B747/68 Amdt 1\n\nOff-Wing Escape Slide System AD/B747/69 Amdt 2\n\nNacelles/Pylons - Diagonal Brace Lugs AD/B747/70 Amdt 2\n\nCavity Aft of Wing Centre Section AD/B747/71 Amdt 1\n\nFuselage Crown Crease Beam AD/B747/72\n\nStabiliser Limit Switch Assembly AD/B747/73\n\nWing Landing Gear Support Beam Outboard End Fitting AD/B747/74\n\nThree Phase Circuit Breaker - CANCELLED AD/B747/75\n\nH-11 Steel Bolts AD/B747/76 Amdt 1\n\nAPU Fire Detection AD/B747/77\n\nFire Control Panel Electrical Connectors - CANCELLED AD/B747/78\n\nStructural Modification/Inspection Program AD/B747/79 Amdt 2\n\nEquipment Cooling System E30 Cooling Rack Orifice AD/B747/80\n\nWing Landing Gear Trunnion AD/B747/81 Amdt 1\n\nMain Deck Cargo Compartment AD/B747/82 Amdt 2\n\nFuel Tank Access Doors AD/B747/83\n\nTrailing Edge Flap Tracks Forward End Clevis Lug AD/B747/84 Amdt 1\n\nCorrosion Prevention and Control Program AD/B747/85 Amdt 2\n\nCargo Compartment Liner Panels AD/B747/86\n\nAural and Master Fire Warning Systems AD/B747/87\n\nCWT Secondary Fuel Barrier AD/B747/88\n\nFlight Compartment Ashtray AD/B747/89\n\nTrailing Edge Flap Track AD/B747/90 Amdt 1\n\nEFIS Control Panel AD/B747/91\n\nHorizontal Stabiliser AD/B747/92\n\nSection 42 Fuselage Frame Web AD/B747/93\n\nFire Extinguishing System AD/B747/94\n\nWing Leading Edge Duct AD/B747/95\n\nDrain Mast Assemblies AD/B747/96\n\nCargo Fire Extinguishing Agent Containers AD/B747/97\n\nAuxiliary Power Unit (APU) Pneumatic Ducts AD/B747/98\n\nDifferential Protection Current Transformers - Wiring AD/B747/99\n\nBrake Wear Limit AD/B747/100 Amdt 1\n\nRadio Control Panels AD/B747/101\n\n  \nP180-1 Terminal Strip Nuts AD/B747/102\n\nCabin Overhead Stowage Compartment Doors AD/B747/103\n\nDoor 3 Evacuation System AD/B747/104\n\nEngine Strut Power Feeder/Fuel Tube Clearance AD/B747/105\n\nCabin Entertainment System Wire Bundle Chafing AD/B747/106\n\nOxygen System - Pilots and Co-Pilots Oxygen Hoses AD/B747/107\n\nGirt Bar Floor Brackets AD/B747/108\n\nPassenger Oxygen System Continuous Flow Control Unit AD/B747/109\n\nDoorstop Support Fitting AD/B747/110\n\nEvacuation System Packboards and Cover Assemblies AD/B747/111\n\nMain Entry Door Guide Arm AD/B747/112\n\nFire Protection Plumbing and Wiring AD/B747/113\n\nEscape Slides AD/B747/114\n\nEscape Slide/Raft AD/B747/115\n\nStrut Firewall Power Feeder Cable Connectors AD/B747/116\n\nInspection of Cockpit Wire Bundles AD/B747/117\n\nCargo Doorway Fitting AD/B747/118 Amdt 1\n\nEngine Bleed Air Crossover Duct AD/B747/119\n\nLower Lobe Cargo Doors and Main Deck Side Cargo Door AD/B747/120 Amdt 1\n\nInspection of APU and Cargo Compartment Fire Extinguisher Bottle Cartridges AD/B747/121 Amdt 1\n\nIce and Rain Protection - Pitot Static and Temperature Probe Icing AD/B747/122\n\nStretched Upper Deck Escape System AD/B747/123\n\nH-11 Steel Bolts AD/B747/124\n\nEvacuation Slide/Raft Regulator AD/B747/125\n\nPneumatic Duct Coupling AD/B747/126\n\nEngine Mount Bolt Inspection AD/B747/127\n\nLower Lobe Lap Joints at Wing to Body Fairing AD/B747/128 Amdt 1\n\nFuselage Lower Frames at Body Stations 2200 and 2220 AD/B747/129\n\nThrust Reverser Control System Modification AD/B747/130 Amdt 1\n\nFlap Control Unit Wiring Change AD/B747/131\n\nFuselage - Upper Lobe Skin Panel Joints AD/B747/132\n\nFuselage - Upper Deck Floor Beams at BS 860 and 980 AD/B747/133\n\nEvacuation Ramp/Slide AD/B747/134\n\nPotable Water Tank Pressure Relief Valve AD/B747/135\n\nFuselage - Nose Wheel Well AD/B747/136 Amdt 1\n\nNacelle - Strut Diagonal Brace AD/B747/137\n\n  \nFuselage - Upper Deck Tension Tie BS 780 to BS 940 AD/B747/138\n\nAgeing Aircraft Structural Inspection Programme AD/B747/139\n\nFuselage - Lap Joint Upper Nose Section BS 400 to 520 AD/B747/140\n\nPylon - Inboard and Outboard Strut Forward Lower Spar AD/B747/141\n\nFuselage Skin Lap Joints AD/B747/142\n\nFuselage Section 41 Skin Stringer Joints AD/B747/143\n\nEngine Thrust Control - Idler Cable Pulley Support Bracket AD/B747/144\n\nOutboard Engine Strut Spring Beam AD/B747/145 Amdt 1\n\nEngine Strut Wing Seal AD/B747/146\n\nStretched Upper Deck Evacuation Slides AD/B747/147\n\nFuselage Skin Stringer 12 Lap Joint AD/B747/148 Amdt 1\n\nFuselage Skin Above Forward Entry Doors AD/B747/149\n\nUpper Link Fuse Pin AD/B747/150 Amdt 1\n\nWing Front Spar Web AD/B747/151\n\nWings - Front Spar Web Between FSS 628.0 and 675.0 AD/B747/152\n\nNacelle Strut and Wing Structure - P & W JT9D Series Engine AD/B747/153\n\nNacelle Strut and Wing Structure - Rolls Royce RB211 Series Engine AD/B747/154 Amdt 1\n\nThrust Reverser Pneumatic Drive AD/B747/155 Amdt 1\n\nDoor 2 Escape Slide/Raft AD/B747/156\n\nP&W JT9D Aft Engine Mount Tangential Link AD/B747/157 Amdt 1\n\nFuel Shut-Off Valve Wiring AD/B747/158\n\nForward Pressure Bulkhead AD/B747/159\n\nFuselage Skin Above Main Entry Doors - 2 AD/B747/160\n\nTriple Channel Autoland Autopilots AD/B747/161\n\nOverhead Stowage Bin AD/B747/162\n\nFuselage Internal Structure AD/B747/163 Amdt 2\n\nDoor 5 Escape Slide/Raft AD/B747/164\n\nElevator Control System Modifications AD/B747/165\n\nReplacement of Hydraulic Fuses AD/B747/166\n\nSection 41 Bonded Skin Panels AD/B747/167 Amdt 1\n\nEngine Pylon Aft Torque Bulkhead AD/B747/168 Amdt 2\n\nMidspar Fuse Pin AD/B747/169 Amdt 1\n\nMain Entry Door Girt Bar Support Fitting AD/B747/170\n\nOutboard Main Fuel Tank Boost Pump Wiring AD/B747/171 Amdt 4\n\nNose Wheel Well Vertical Beams and Fuselage Frames AD/B747/172 Amdt 1\n\nFuel Boost and Override/Jettison Pumps AD/B747/173 Amdt 1\n\n  \nStrut Midspar Fitting Lower Horizontal Clevis AD/B747/174 Amdt 1\n\nDoor Switch Replacement AD/B747/175 Amdt 1\n\nCentre Wing Tank Front Spar Web AD/B747/176 Amdt 1\n\nUpper Deck Floor Beam at Sta. 980 AD/B747/177\n\nSeat Track Alignment AD/B747/178 Amdt 1\n\nCentre Fuel Tank Scavenge Pump Inspection - CANCELLED AD/B747/179 Amdt 1\n\nLongeron Splice Fittings at Stringer 11, BS 2598 AD/B747/180 Amdt 1\n\nDoor 4 Galley Electrical Power Feeder/Oxygen Plumbing AD/B747/181\n\nInternal Skin Doublers at BS 460 - CANCELLED AD/B747/182\n\nNacelle Strut Structure AD/B747/183\n\nAuxiliary Power Unit Battery Ground AD/B747/184\n\nMain Fuel Tank Boost Pump Wiring Teflon Sleeving AD/B747/185\n\nRudder Pedal Pushrods AD/B747/186 Amdt 1\n\nCentre Wing Fuel Tank Scavenge Pump AD/B747/187\n\nCentre Wing Fuel Tank Override/Jettison Inlet Check Valves AD/B747/188 Amdt 3\n\nBody Station 2598 Bulkhead Inner Chord AD/B747/189\n\nInstrument Landing System Receivers AD/B747/190 Amdt 1\n\nEngine Fire Detection AD/B747/191\n\nCabin Attendants Panel Switches AD/B747/192\n\nFuel Leaks AD/B747/193 Amdt 1\n\nHorizontal Stabilizer Fuel Tank Pumps - CANCELLED AD/B747/194\n\nLeading Edge Flaps - Prevention of Uncommanded Retraction AD/B747/195\n\nThrust Lever Cam and Bellcrank Assembly and Thrust Reverser Control Switch AD/B747/196\n\nWing Centre Section Rear Spar Web AD/B747/197\n\nMain Entry Door Stop Support Fitting AD/B747/198\n\nCabin Pressure Control System AD/B747/199\n\nAPU Fuel Boost Pumps AD/B747/200\n\nCentre Fuel Tank Wiring and Components AD/B747/201 Amdt 3\n\nWing Inboard Foreflap Sequence Carriage Attachment AD/B747/202\n\nLavatory Drain System Leak Tests AD/B747/203\n\nNumber 1 Main Entry Door Cutout AD/B747/204\n\nLower Lobe Fuselage Frames AD/B747/205\n\nUpper Link Assembly on Number 2 and Number 3 Engine Struts AD/B747/206\n\nNacelle Diagonal Brace Steel Attachment Fittings AD/B747/207 Amdt 1\n\nWing Front Spar Web at Inboard Engine Struts AD/B747/208\n\nNacelle Strut Fuse Pins AD/B747/209\n\n  \nAileron Cable System AD/B747/210\n\nUpper Rudder Pedal Cover Doubler AD/B747/211\n\nModular Avionics Warning Electronic Assembly AD/B747/212\n\nE-42 Satellite Communications Rack AD/B747/213\n\nThrust Reverser Checks AD/B747/214 Amdt 3\n\nEngine Thrust Links PW4000 Powered Aircraft AD/B747/215\n\nVideo Monitor Supports AD/B747/216 Amdt 1\n\nE-42 Satellite Communications Rack - 2 AD/B747/217\n\nCrew Rest Area Heat Exchanger AD/B747/218\n\nLateral Control System Cable Guards AD/B747/219\n\nBody Station 1265 Edge Frame AD/B747/220\n\nLower Lobe and Main Deck Side Cargo Doors Latch Pins AD/B747/221\n\nWing Front Spar Upper and Lower Chords AD/B747/222\n\nDiagonal Brace Underwing Fitting Bolts AD/B747/223\n\nUpper Deck Floor Beams AD/B747/224\n\nThrust Reverser Deactivation Pins AD/B747/225\n\nWing Rear Spar Lower Chord Splice Plate and Kick Fitting H-11 Bolts AD/B747/226\n\nEngine Strut Fire Extinguisher Discharge Tube - CANCELLED AD/B747/227 Amdt 1\n\nStation 2598 Bulkhead Forward Inner Chord AD/B747/228 Amdt 1\n\nEngine Thrust Control Cables AD/B747/229\n\nThrust Reverser Checks AD/B747/230 Amdt 1\n\nThrust Reverser Control System Operational Test - CANCELLED AD/B747/231 Amdt 1\n\nCrew Rest Area Heat Exchanger - 2 AD/B747/232 Amdt 1\n\nHorizontal Stabiliser Fuel Tank Wire Bundles AD/B747/233\n\nAft Pressure Bulkhead AD/B747/234\n\nFuselage Skin at BS 980 Drag Splice Fitting AD/B747/235 Amdt 1\n\nHoneywell Inertial Reference Units AD/B747/236\n\nThrust Reverser Auxiliary Track Assembly AD/B747/237\n\nHydraulic Brake Accumulators AD/B747/238\n\nMain Entry Door 1 Forward Edge Frame AD/B747/239\n\nAir Conditioning Duct Insulation AD/B747/240\n\nFlight Deck Dripshield Fire Blocking Installation AD/B747/241\n\nTrailing Edge Flap H-11 Bolts AD/B747/242\n\nMidspar Fuse Pin Retention AD/B747/243 Amdt 1\n\nMultiple Engine Power Losses - CANCELLED AD/B747/244\n\nLongeron Splice Fittings, Stringer 11 at Body Station 2598 AD/B747/245\n\n  \nWing Front Spar Web AD/B747/246 Amdt 2\n\nReduced Acceleration and Climb Performance AD/B747/247 Amdt 1\n\nOxygen Generators AD/B747/248\n\nEngine Thrust Control Cables AD/B747/249\n\nThrust Reverser AD/B747/250 Amdt 1\n\nFuel Quantity Indicating System Wiring AD/B747/251 Amdt 1\n\nPitot Static Probe Wiring AD/B747/252\n\nIn-Flight Entertainment System FAA STC SA8622SW AD/B747/253\n\nPassenger Entertainment System FAA STC ST09097AC-D AD/B747/254\n\nPassenger Entertainment System FAA STC SA8843SW AD/B747/255\n\nBody Station 1480 Bulkhead AD/B747/256\n\nIn-Flight Entertainment System FAA STC ST00196SE AD/B747/257\n\nEngine Pylon Diagonal Brace Underwing Fitting AD/B747/258\n\nTrailing Edge Flap Actuator Attach Fittings AD/B747/259\n\nBulkhead Frame Support at Body Station 2598 AD/B747/260\n\nFuselage Station 800 Frame AD/B747/261\n\nNumber 5 Entry Door Cutout AD/B747/262\n\nRudder Pedal Pushrod Fastener AD/B747/263\n\nFlight Engineer Panel - Electrical Wire Bundles AD/B747/264\n\nPassenger Service Units Electrical Wire Bundle Chafing AD/B747/265\n\nFlight Engineers Panel Wire Bundle Clamping AD/B747/266\n\nShoulder Restraint of Attendant or Observers Seat AD/B747/267\n\nTrailing Edge Flap Transmission Torque Brake AD/B747/268\n\nEngine Core Cowl Latch Modification AD/B747/269\n\nCentre Wing/Horizontal Stabilizer Fuel Tank Override/Jettison/Transfer Pumps AD/B747/270\n\nHorizontal Stabiliser Centre Section and Rear Spar Upper Chord AD/B747/271\n\nThrust Reverser Directional Pilot Valve AD/B747/272\n\nThrust Reverser Flow Restrictor AD/B747/273\n\nBody Station 1480 Bulkhead Splice AD/B747/274 Amdt 1\n\nThrust Reverser Inspections, Modifications and Tests AD/B747/275\n\nThrust Reverser Modifications and Tests AD/B747/276\n\nThrust Reverser Inspections and Tests AD/B747/277 Amdt 2\n\nThrust Reversers AD/B747/278\n\nFuel Pump Limitations - CANCELLED AD/B747/279 Amdt 1\n\nFuel Tank Pumps AD/B747/280\n\nUpper Deck Floor Beam Upper Chord and Web AD/B747/281\n\n  \nEngine Fire Extinguisher - Modification AD/B747/282\n\nFuel Tank Limitations AD/B747/283\n\nWater Purifier - LBA STC TA0585 - CANCELLED AD/B747/284\n\nInboard Engine Strut Diagonal Brace Attachment AD/B747/285\n\nOxygen Masks AD/B747/286\n\nDrip Shield and Supports above Rudder Pedal Mechanism AD/B747/287\n\nVertical Stabiliser and Fuselage Skin Interface AD/B747/288\n\nFuselage Skin between BS 1961 and BS 2360 AD/B747/289\n\nTrailing Edge Flap Actuator Attach Fittings - 2 AD/B747/290\n\nNose Wheel Well Panel Rivets AD/B747/291\n\nBS 2360 Aft Pressure Bulkhead Outer Chord Bolts AD/B747/292\n\nAft Lower Lobe Cargo Door Cutout AD/B747/293\n\nHorizontal Stabiliser Outboard Centre Sections Upper Skin and Rear Spar AD/B747/294\n\nWing Foreflap Sequence Carriage Clevis Bushings AD/B747/295\n\nBody Station 2598 Bulkhead AD/B747/296\n\nShoulder Restraint Harness Attachment AD/B747/297\n\nThrust Reverser System Locks AD/B747/298 Amdt 1\n\nYaw Damper Actuator AD/B747/299\n\nCargo Door Latch Fitting H-11 Steel Bolts AD/B747/300\n\nDiscrepant Hydraulic Valves AD/B747/301\n\nRudder Feel, Centering & Trim Mechanism AD/B747/302\n\nBFGoodrich Emergency Slide or Slide/Raft AD/B747/303\n\nWing Rear Spar Upper Chord and Splice Fitting Structure AD/B747/304\n\nWire Bundle W4489 AD/B747/305\n\nPassenger Service Unit Panel Rail Tie Bar AD/B747/306\n\nIntegrated Drive Generator Power Feeder Cables AD/B747/307\n\nAir Data System AD/B747/308\n\nElectrical Bonding AD/B747/309\n\nWater and Drain Line Heaters AD/B747/310\n\nSection 42 Skin and Doubler at Ground Exhaust Valve Cutout AD/B747/311\n\nFire Extinguisher System Tube AD/B747/312\n\nFire Extinguisher Bottles AD/B747/313\n\nAft Pressure Bulkhead Web AD/B747/314\n\nWing Landing Gear Outer Cylinder AD/B747/315\n\nPrevention of Mineral Deposits on Fire Shutoff Switches AD/B747/316\n\nInadvertent Commanded Shutdown of the Engine Bleed Air Systems AD/B747/317\n\n  \nCargo Restraint Strap Assemblies AD/B747/318\n\nAft Lower Lobe Cargo Compartment Side Guide Support Fittings AD/B747/319","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The legislation maintains its original scope. This is a pure consolidation/remaking exercise with no expansion of regulatory reach. The instrument explicitly states that each Airworthiness Directive is being remade 'in exactly the same form' as the latest published edition. The scope remains limited to Boeing 747 series aeroplanes and the specific safety matters covered by the existing 319 directives."},"complexity_factors":["Simple, single-purpose instrument with only two operative provisions (revocation and remaking)","No defined terms section—the document relies on external definitions in the Civil Aviation Safety Regulations 1998","No conditional logic or nested exceptions in the instrument itself","Extensive schedule (319 items) but purely tabular/list format with no substantive legal text","Cross-references only to subregulation 39.001(1) of the CASR 1998 and to the attached schedules","Note clarifies that attached directives are remade 'in exactly the same form'—no substantive changes being made","Length is deceptive: 319 entries but each is just a title and reference number, not operative provisions"],"plain_english_summary":"This instrument revokes all existing Airworthiness Directives for Boeing 747s and remakes 319 of them as new, separate legal instruments in their current form. It’s an administrative update to ensure those mandatory safety rules remain valid and enforceable under current regulations.\n\nIt affects Boeing 747 operators, owners and maintenance organisations in Australia, but does not change the substantive safety requirements already in force."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument does not expand or materially change the substantive scope of regulation. It is an administrative revocation and re‑making of existing ADs for Boeing 747 series aeroplanes, stated to be in the same form as the latest published editions. There is no indication the measure grew beyond that housekeeping purpose; the primary effect is legal re‑publication and record organisation rather than new regulatory obligations."},"complexity_factors":["Primarily administrative single‑action instrument (revocation and re‑making) — low legal complexity","Large schedule: approximately 319 AD entries listed (AD/B747/1 through AD/B747/319), many with amendment notations","Multiple entries marked \"CANCELLED\" which creates potential ambiguity about whether they are being re‑issued or simply recorded as cancelled","Cross‑reference to CASR subregulation 39.001(1) (single external legal cross‑reference)","Operational complexity for regulated parties (need to update internal compliance records) despite low textual complexity"],"plain_english_summary":"**What this instrument does (mechanical change)\n\n- It formally revokes a long list of existing Airworthiness Directives (ADs) that apply to Boeing 747 series aeroplanes and at the same time re‑issues (re‑makes) each of those ADs as a separate legal instrument. The power used is subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998. The revoked/re‑made items are listed in Schedule 1.\n\n- The instrument states that each re‑made AD is issued \"in exactly the same form as appears in the latest published edition of the Directive.\" In other words, it is an administrative re‑issue rather than a substantive change to the content of the ADs.\n\nWho is affected\n\n- Aircraft operators and owners of Boeing 747 series aeroplanes registered in Australia (or otherwise subject to CASA ADs). Those operators must comply with the requirements of each AD that applies to their aeroplanes (for example, inspections, modifications, part replacements, operational limitations).\n\n- Maintenance organisations, licensed engineers and parts suppliers who carry out work to satisfy AD requirements.\n\n- The Civil Aviation Safety Authority (CASA) and its delegates, who administer and enforce AD compliance.\n\nWhy it matters (practical effect)\n\n- An Airworthiness Directive is a mandatory safety requirement that compels operators to take specified maintenance or inspection action to address an identified unsafe condition. By revoking and re‑making ADs as separate instruments, CASA is changing the legal form and recordation of those requirements while (according to the instrument) keeping their substantive content the same.\n\n- For operators this means the legal source of the obligation may move from one instrument to a newly issued separate instrument. Practically, operators still must follow the ADs; the action is intended to preserve continuity of the safety requirements while reorganising how they are recorded and published.\n\nOfficial rationale and a practical test of that rationale\n\n- The instrument’s stated rationale (the note at the end) is administrative: each AD is being re‑made in exactly the same form as the latest published edition. The likely purpose is housekeeping — to create separate, standalone AD instruments for clarity, record keeping and enforcement.\n\n- Testing that claim against practical factors:\n  - Costs to operators: If the re‑making truly produces no substantive change, there is no new technical compliance cost (inspections/modifications remain the same). There is a modest administrative cost for operators to update internal compliance records, manuals and maintenance tracking systems to reflect the newly issued AD instrument references.\n  - Incentives and enforcement: CASA (the decision maker) preserves the same safety rules but obtains clearer legal instruments to rely on for enforcement. That concentrates benefits for the regulator (simpler legal references) while costs (record‑keeping updates) are dispersed across many operators.\n  - Implementation risk: There is a small risk of transitional confusion — for example, which AD number or document applies on any given date, or whether a listed item marked \"CANCELLED\" is being reissued or simply recorded as cancelled. Operators must check the attached re‑made instruments and the CASA register to confirm continuity of obligations.\n  - Bureaucratic discretion: The delegate acting under CASR 39.001(1) decides the revocation and re‑issue; the instrument does not change technical details or expand CASA’s substantive regulatory reach beyond existing AD content.\n\nOther notable points\n\n- Schedule 1 lists a large number of ADs (covering a wide range of topics from structural inspections to fire systems, fuel systems, evacuation slides, etc.). Many items show amendment notations (\"Amdt\") and some are marked \"CANCELLED.\" The presence of \"CANCELLED\" entries in the schedule may reflect ADs that had previously been cancelled and are being recorded in the administrative exercise; operators should confirm whether a cancelled AD imposes any current obligation.\n\n- Who pays and who decides: CASA (through its delegate) decides to revoke and re‑make the ADs; the recurrent costs of complying with the underlying AD requirements fall on aircraft operators and their maintenance providers (see Schedule 1 and the instrument’s reference to subregulation 39.001(1)).\n\nBottom line\n\n- This is primarily an administrative housekeeping instrument that revokes a listed set of Boeing 747 ADs and reissues each as a separate legal instrument in the same substantive form as the latest published editions. It preserves existing technical obligations but requires operators and maintainers to confirm and, if necessary, update their compliance records to reflect the newly issued instrument references."},"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-boeing-747-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-747-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-747-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-747-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-747-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-747-series-aeroplanes/documents"}}