List of Atas and Sub Atas
The ATA system was first implemented by the Air Transport Association and was designed to make it easier for aeronautical personnel to organize, distribute, and manage documents. It is made up of 100 codes and subcodes where we can find important aircraft systems, subsystems and data .
In an effort to standardize the format in which maintenance information is presented in aircraft maintenance manuals, Airlines for America (formerly the Air Transport Association) published specifications for manufacturers' technical data. The original specification was called ATA Spec 100. Over the years, Spec 100 has been continually revised and updated. Over time, ATA Spec 2100 was developed for electronic documentation. These two specifications evolved into a document called ATA iSpec 2200. As a result of this standardization, maintenance technicians can always find information on a particular system in the same section of an aircraft maintenance manual, regardless of manufacturer. For example,
The A4A iSPec 2200 divides the aircraft into systems, such as air conditioning, which covers the basic air conditioning system (A4A 21). The numbering of each main system provides a provision for breaking down the system into various subsystems. Late-model aircraft, both above and below the 12,500 pound designation, have their parts and maintenance manuals arranged according to the A4A coded system. The following abbreviated table of A4A systems, subsystems, and titles is included for your familiarity.
ATA 11 Placards and markings
ATA 1100 placards and markings
ATA 12 Servicing
ATA 1210 fuel servicing
ATA 1220 oil servicing
ATA 1230 hydraulic fluid servicing
ATA 1240 coolant servicing
ATA 14 Hardware
ATA 1400 miscellaneous hardware
ATA 1410 hoses and tubes
ATA 1420 electrical connectors
ATA 1430 fasteners
ATA 1497 miscellaneous wiring
ATA 18 Helicopter vibration
ATA 1800 helicopter vib/noise analysis
ATA 1810 helicopter vibration analysis
ATA 1820 helicopter noise analysis
ATA 1897 helicopter vibration system wiring
ATA 21 Air conditioning
ATA 2100 air conditioning system
ATA 2110 cabin compressor system
ATA 2120 air distribution system
ATA 2121 air distribution fan
ATA 2130 cabin pressure control system
ATA 2131 cabin pressure controller
ATA 2132 cabin pressure indicator
ATA 2133 pressure regul/outflow valve
ATA 2134 cabin pressure sensor
ATA 2140 heating system
ATA 2150 cabin cooling system
ATA 2160 cabin temperature control system
ATA 2161 cabin temperature controller
ATA 2162 cabin temperature indicator
ATA 2163 cabin temperature sensor
ATA 2170 humidity control system
ATA 2197 air conditioning system wiring
ATA 22 Auto flight
ATA 2200 auto flight system
ATA 2210 autopilot system
ATA 2211 autopilot computer
ATA 2212 altitude controller
ATA 2213 flight controller
ATA 2214 autopilot trim indicator
ATA 2215 autopilot main servo
ATA 2216 autopilot trim servo
ATA 2220 speed-attitude correct. system
ATA 2230 auto throttle system
ATA 2250 aerodynamic load alleviating
ATA 2297 autoflight system wiring
ATA 23 Communications
ATA 2300 communications system
ATA 2310 hf communication system
ATA 2311 uhf communication system
ATA 2312 vhf communication system
ATA 2320 data transmission auto call
ATA 2330 entertainment system
ATA 2340 interphone/passenger pa system
ATA 2350 audio integrating system
ATA 2360 static discharge system
ATA 2370 audio/video monitoring
ATA 2397 communication system wiring
ATA 24 Electrical power
ATA 2400 electrical power system
ATA 2410 alternator-generator drive
ATA 2420 ac generation system
ATA 2421 ac generator-alternator
ATA 2422 ac inverter
ATA 2423 phase adapter
ATA 2424 ac regulator
ATA 2425 ac indicating system
ATA 2430 dc generating system
ATA 2431 battery overheat warn. system
ATA 2432 battery/charger system
ATA 2433 dc rectifier/converter
ATA 2434 dc generator-alternator
ATA 2435 starter-generator
ATA 2436 dc regulator
ATA 2437 dc indicating system
ATA 2440 external power system
ATA 2450 ac power distribution system
ATA 2460 dc power/distribution system
ATA 2497 electrical power system wiring
ATA 25 Equipment / furnishings
ATA 2500 cabin equipment/furnishings
ATA 2510 flight compartment equipment
ATA 2520 passenger compartment equipment
ATA 2530 buffet/galleys
ATA 2540 lavatories
ATA 2550 cargo compartments
ATA 2551 agricultural spray system
ATA 2560 emergency equipment
ATA 2561 life jacket
ATA 2562 emergency locator beacon
ATA 2563 parachute
ATA 2564 life raft
ATA 2565 escape slide
ATA 2570 accessory compartment
ATA 2571 battery box structure
ATA 2572 electronic shelf section
ATA 2597 equip/furnishing system wiring
ATA 26 Fire protection
ATA 2600 fire protection system
ATA 2610 detection system
ATA 2611 smoke detection
ATA 2612 fire detection
ATA 2613 overheat detection
ATA 2620 extinguishing system
ATA 2621 fire bottle, fixed
ATA 2622 fire bottle, portable
ATA 2697 fire protection system wiring
ATA 27 Flight controls
ATA 2700 flight control system
ATA 2701 control column section
ATA 2710 aileron control system
ATA 2711 aileron tab control system
ATA 2720 rudder control system
ATA 2721 rudder tab control system
ATA 2722 rudder actuator
ATA 2730 elevator control system
ATA 2731 elevator tab control system
ATA 2740 stabilizer control system
ATA 2741 stabilizer position indicating
ATA 2742 stabilizer actuator
ATA 2750 te flap control system
ATA 2751 te flap position ind. system
ATA 2752 te flap actuator
ATA 2760 drag control system
ATA 2761 drag control actuator
ATA 2770 gust lock/damper system
ATA 2780 le slat control system
ATA 2781 le slat position ind. system
ATA 2782 le slat actuator
ATA 2797 flight control system wiring
ATA 28 Fuel
ATA 2800 aircraft fuel system
ATA 2810 fuel storage
ATA 2820 acft fuel distrib. system
ATA 2821 acft fuel filter/strainer
ATA 2822 fuel boost pump
ATA 2823 fuel selector/shut-off valve
ATA 2824 fuel transfer valve
ATA 2830 fuel dump system
ATA 2840 acft fuel indicating system
ATA 2841 fuel quantity indicator
ATA 2842 fuel quantity sensor
ATA 2843 fuel temperature indicator
ATA 2844 fuel pressure indicator
ATA 2897 fuel system wiring
ATA 29 Hydraulic power
ATA 2900 hydraulic power system
ATA 2910 hydraulic system, main
ATA 2911 hydraulic power accumulator, main
ATA 2912 hydraulic filter, main
ATA 2913 hydraulic pump, (elect/eng), main
ATA 2914 hydraulic handpump, main
ATA 2915 hydraulic pressure relief vlv, main
ATA 2916 hydraulic reservoir, main
ATA 2917 hydraulic pressure regulator, main
ATA 2920 hydraulic system, auxiliary
ATA 2921 hydraulic accumulator, auxiliary
ATA 2922 hydraulic filter, auxiliary
ATA 2923 hydraulic pump, auxiliary
ATA 2925 hydraulic pressure relief, auxiliary
ATA 2926 hydraulic reservoir, auxiliary
ATA 2927 hydraulic pressure regulator, aux.
ATA 2930 hydraulic indicating system
ATA 2931 hydraulic pressure indicator
ATA 2932 hydraulic pressure sensor
ATA 2933 hydraulic quantity indicator
ATA 2934 hydraulic quantity sensor
ATA 2997 hydraulic power system wiring
ATA 30 Ice and Rain protection
ATA 3000 ice/rain protection system
ATA 3010 airfoil anti/de-ice system
ATA 3020 air intake anti/de-ice system
ATA 3030 pitot/static anti-ice system
ATA 3040 windshield/door rain/ice removal
ATA 3050 antenna/radome anti-ice/de-ice system
ATA 3060 prop/rotor anti-ice/de-ice system
ATA 3070 water line anti-ice system
ATA 3080 ice detection
ATA 3097 ice/rain protection system wiring
ATA 31 I nstruments
ATA 3100 indicating/recording system
ATA 3110 instrument panel
ATA 3120 independent instruments (clock, etc.)
ATA 3130 data recorders (flt/maint)
ATA 3140 central computers (eicas)
ATA 3150 central warning
ATA 3160 central display
ATA 3170 automatic data
ATA 3197 instrument system wiring
ATA 32 L anding gear
ATA 3200 landing gear system
ATA 3201 landing gear/wheel fairing
ATA 3210 main landing gear
ATA 3211 main landing gear attach section
ATA 3212 emergency flotation section
ATA 3213 main landing gear strut/axle/truck
ATA 3220 nose/tail landing gear
ATA 3221 nose/tail landing gear attach section
ATA 3222 nose/tail landing gear strut/axle
ATA 3230 landing gear retract/extend system
ATA 3231 landing gear door retract section
ATA 3232 landing gear door actuator
ATA 3233 landing gear actuator
ATA 3234 landing gear selector
ATA 3240 landing gear brake system
ATA 3241 brake anti-skid section
ATA 3242 brake
ATA 3243 master cylinder/brake valve
ATA 3244 tire
ATA 3245 tire tube
ATA 3246 wheel/ski/float
ATA 3250 landing gear steering system
ATA 3251 steering unit
ATA 3252 shimmy damper
ATA 3260 landing gear position and warning
ATA 3270 auxiliary gear (tail skid)
ATA 3297 landing gear system wiring
ATA 33 Lights
ATA 3300 lighting system
ATA 3310 flight compartment lighting
ATA 3320 passenger compartment lighting
ATA 3330 cargo compartment lighting
ATA 3340 exterior lighting
ATA 3350 emergency lighting
ATA 3397 light system wiring
ATA 34 Navigation
ATA 3400 navigation system
ATA 3410 flight environment data
ATA 3411 pitot/static system
ATA 3412 outside air temp. ind./sensor
ATA 3413 rate of climb indicator
ATA 3414 airspeed/mach indicator
ATA 3415 high speed warning
ATA 3416 altimeter, barometric/encoder
ATA 3417 air data computer
ATA 3418 stall warning system
ATA 3420 attitude and direction data system
ATA 3421 attitude gyro and ind. system
ATA 3422 directional gyro and ind. system
ATA 3423 magnetic compass
ATA 3424 turn and bank/rate of turn indicator
ATA 3425 integrated flt. director system
ATA 3430 landing and taxi aids
ATA 3431 localizer/vor system
ATA 3432 glide slope system
ATA 3433 microwave landing system
ATA 3434 marker beacon system
ATA 3435 heads up display system
ATA 3436 wind shear detection system
ATA 3440 independent pos. determining system
ATA 3441 inertial guidance system
ATA 3442 weather radar system
ATA 3443 doppler system
ATA 3444 ground proximity system
ATA 3445 air collision avoidance system (tcas)
ATA 3446 non radar weather system
ATA 3450 dependent position determining sys
ATA 3451 dme/tacan system
ATA 3452 atc transponder system
ATA 3453 loran system
ATA 3454 vor system
ATA 3455 adf system
ATA 3456 omega navigation system
ATA 3457 global positioning system
ATA 3460 flt manage. computing hardware sys
ATA 3461 flt manage. computing software sys
ATA 3497 navigation system wiring
ATA 35 Oxygen
ATA 3500 oxygen system
ATA 3510 crew oxygen system
ATA 3520 passenger oxygen system
ATA 3530 portable oxygen system
ATA 3597 oxygen system wiring
ATA 36 Pneumatic
ATA 3600 pneumatic system
ATA 3610 pneumatic distribution system
ATA 3620 pneumatic indicating system
ATA 3697 pneumatic system wiring
ATA 37 Vaccum
ATA 3700 vacuum system
ATA 3710 vacuum distribution system
ATA 3720 vacuum indicating system
ATA 3797 vacuum system wiring
ATA 38 Water / waste
ATA 3800 water and waste system
ATA 3810 potable water system
ATA 3820 wash water system
ATA 3830 waste disposal system
ATA 3840 air supply (water press. system)
ATA 3897 water/waste system wiring
ATA 45 Central maintenance system
ATA 4500 central maint. computer
ATA 4597 central maint. system wiring
ATA 49 Airborne auxiliary power
ATA 4900 airborne apu system
ATA 4910 APU cowling/containment
ATA 4920 APU core engine
ATA 4930 APU engine fuel and control
ATA 4940 APU start/ignition system
ATA 4950 APU bleed air system
ATA 4960 APU controls
ATA 4970 APU indicating system
ATA 4980 APU exhaust system
ATA 4990 APU oil system
ATA 4997 APU system wiring
ATA 51 Standard practices / structures
ATA 5100 standard practices/structures
ATA 5101 aircraft structures
ATA 5102 balloon reports
ATA 52 Doors
ATA 5200 doors
ATA 5210 passenger/crew doors
ATA 5220 emergency exits
ATA 5230 cargo/baggage doors
ATA 5240 service doors
ATA 5241 galley doors
ATA 5242 e/e compartment doors
ATA 5243 hydraulic compartment doors
ATA 5244 accessory compartment doors
ATA 5245 air conditioning compart. doors
ATA 5246 fluid service doors
ATA 5247 apu doors
ATA 5248 tail cone doors
ATA 5250 fixed inner doors
ATA 5260 entrance stairs
ATA 5270 door warning system
ATA 5280 landing gear doors
ATA 5297 door system wiring
ATA 53 Fuselage
ATA 5300 fuselage structure (general)
ATA 5301 aerial tow equipment
ATA 5302 rotorcraft tail boom
ATA 5310 fuselage main, structure
ATA 5311 fuselage main, frame
ATA 5312 fuselage main, bulkhead
ATA 5313 fuselage main, longeron/stringer
ATA 5314 fuselage main, keel
ATA 5315 fuselage main, floor beam
ATA 5320 fuselage miscellaneous structure
ATA 5321 fuselage floor panel
ATA 5322 fuselage internal mount structure
ATA 5323 fuselage internal stairs
ATA 5324 fuselage fixed partitions
ATA 5330 fuselage main, plate/skin
ATA 5340 fuselage main, attach fittings
ATA 5341 fuselage, wing attach fittings
ATA 5342 fuselage, stabilizer attach fittings
ATA 5343 landing gear attach fittings
ATA 5344 fuselage door hinges
ATA 5345 fuselage equipment attach fittings
ATA 5346 powerplant attach fittings
ATA 5347 seat/cargo attach fittings
ATA 5350 aerodynamic fairings
ATA 5397 fuselage wiring
ATA 54 Nacelles / pylons
ATA 5400 nacelle/pylon structure
ATA 5410 nacelle/pylon, main frame
ATA 5411 nacelle/pylon, frame/spar/rib
ATA 5412 nacelle/pylon, bulkhead/firewall
ATA 5413 nacelle/pylon, longeron/stringer
ATA 5414 nacelle/pylon, plate skin
ATA 5415 nacelle/pylon, attach fittings
ATA 5420 nacelle/pylon miscellaneous struct.
ATA 5497 nacelle/pylon system wiring
ATA 55 Stabilizers
ATA 5500 empennage structure
ATA 5510 horizontal stabilizer structure
ATA 5511 horizontal stabilizer, spar/rib
ATA 5512 horizontal stabilizer, plate/skin
ATA 5513 horizontal stabilizer, tab structure
ATA 5514 horiz stab miscellaneous structure
ATA 5520 elevator structure
ATA 5521 elevator, spar/rib structure
ATA 5522 elevator, plates/skin structure
ATA 5523 elevator, tab structure
ATA 5524 elevator miscellaneous structure
ATA 5530 vertical stabilizer structure
ATA 5531 vertical stabilizer, spar/rib struct.
ATA 5532 vertical stabilizer, plates/skin
ATA 5533 ventral structure
ATA 5534 vert. stab. miscellaneous structure
ATA 5540 rudder structure
ATA 5541 rudder, spar/rib
ATA 5542 rudder, plate/skin
ATA 5543 rudder, tab structure
ATA 5544 rudder miscellaneous structure
ATA 5550 empennage flt. cont., attach fitting
ATA 5551 horizontal stabilizer, attach fitting
ATA 5552 elevator/tab, attach fittings
ATA 5553 vert. stab., attach fittings
ATA 5554 rudder/tab, attach fittings
ATA 5597 stabilizer system wiring
ATA 56 Windows
ATA 5600 window/windshield system
ATA 5610 flight compartment windows
ATA 5620 passenger compartment windows
ATA 5630 door windows
ATA 5640 inspection windows
ATA 5697 window system wiring
ATA 57 Wings
ATA 5700 wing structure
ATA 5710 wing, main frame structure
ATA 5711 wing spar
ATA 5712 wing, rib/bulkhead
ATA 5713 wing, longeron/stringer
ATA 5714 wing, center box
ATA 5720 wing miscellaneous structure
ATA 5730 wing, plates/skins
ATA 5740 wing, attach fittings
ATA 5741 wing, fuselage attach fittings
ATA 5742 wing, nac/pylon attach fittings
ATA 5743 wing, landing gear attach fittings
ATA 5744 wing, cont. surface attach fittings
ATA 5750 wing, control surfaces
ATA 5751 ailerons
ATA 5752 aileron tab structure
ATA 5753 trailing edge flaps
ATA 5754 leading edge devices
ATA 5755 spoilers
ATA 5797 wing system wiring
ATA 61 Propellers /thrusters
ATA 6100 propeller system
ATA 6110 propeller assembly
ATA 6111 propeller blade section
ATA 6112 propeller de-ice boot section
ATA 6113 propeller spinner section
ATA 6114 propeller hub section
ATA 6120 propeller controlling system
ATA 6121 propeller synchronizer section
ATA 6122 propeller governor
ATA 6123 propeller feathering/reversing
ATA 6130 propeller braking
ATA 6140 propeller indicating system
ATA 6197 propeller/propulsors system wiring
ATA 62 Main rotor
ATA 6200 main rotor system
ATA 6210 main rotor blades
ATA 6220 main rotor head
ATA 6230 main rotor mast/swashplate
ATA 6240 main rotor indicating system
ATA 6297 main rotor system wiring
ATA 63 Main rotor drive
ATA 6300 main rotor drive system
ATA 6310 engine/transmission coupling
ATA 6320 main rotor gearbox
ATA 6321 main rotor brake
ATA 6322 rotorcraft cooling fan system
ATA 6330 main rotor transmission mount
ATA 6340 rotor drive indicating system
ATA 6397 main rotor drive system wiring
ATA 64 Tail rotor
ATA 6400 tail rotor system
ATA 6410 tail rotor blades
ATA 6420 tail rotor head
ATA 6440 tail rotor indicating system
ATA 6497 tail rotor system wiring
ATA 65 tail rotor drive
ATA 6500 tail rotor drive system
ATA 6510 tail rotor drive shaft
ATA 6520 tail rotor gearbox
ATA 6540 tail rotor drive indicating system
ATA 6597 tail rotor drive system wiring
ATA 67 rotors flight control
ATA 6700 rotorcraft flight control
ATA 6710 main rotor control
ATA 6711 tilt rotor flight control
ATA 6720 tail rotor control system
ATA 6730 rotorcraft servo system
ATA 6797 rotors flight control system wiring
ATA 71 powerplant
ATA 7100 powerplant system
ATA 7110 engine cowling system
ATA 7111 engine cowl flaps
ATA 7112 engine air baffle section
ATA 7120 engine mount section
ATA 7130 engine fireseals
ATA 7160 engine air intake system
ATA 7170 engine drains
ATA 7197 powerplant system wiring
ATA 72 turbine / turboprop engine
ATA 7200 engine (turbine/turboprop)
ATA 7210 turbine engine reduction gear
ATA 7220 turbine engine air inlet section
ATA 7230 turbine engine compressor section
ATA 7240 turbine engine combustion section
ATA 7250 turbine section
ATA 7260 turbine engine accessory drive
ATA 7261 turbine engine oil system
ATA 7270 turbine engine bypass section
ATA 7297 turbine engine system wiring
ATA 73 Engine fuel and control
ATA 7300 engine fuel and control
ATA 7310 engine fuel distribution
ATA 7311 engine fuel/oil cooler
ATA 7312 fuel heater
ATA 7313 fuel injector nozzle
ATA 7314 engine fuel pump
ATA 7320 fuel controlling system
ATA 7321 fuel control/turbine engines
ATA 7322 fuel control/receiprocating engines
ATA 7323 turbine governor
ATA 7324 fuel divider
ATA 7330 engine fuel indicating system
ATA 7331 fuel flow indicating
ATA 7332 fuel pressure indicating
ATA 7333 fuel flow sensor
ATA 7334 fuel pressure sensor
ATA 7397 engine fuel system wiring
ATA 74 Ignition
ATA 7400 ignition system
ATA 7410 ignition power supply
ATA 7411 low tension coil
ATA 7412 for example
ATA 7413 induction vibrator
ATA 7414 magneto/distributor
ATA 7420 ignition harness (distribution)
ATA 7421 spark plug/igniter
ATA 7430 ignition/starter switching
ATA 7497 ignition system wiring
ATA 75 Air _
ATA 7500 engine bleed air system
ATA 7510 engine anti-icing system
ATA 7520 engine cooling system
ATA 7530 compressor bleed control
ATA 7531 compressor bleed governor
ATA 7532 compressor bleed valve
ATA 7540 bleed air indicating system
ATA 7597 engine bleed air system wiring
ATA 76 engine controls
ATA 7600 engine controls
ATA 7601 engine synchronizing
ATA 7602 mixture control
ATA 7603 power lever
ATA 7620 engine emergency shutdown system
ATA 7697 engine control system wiring
ATA 77 Engine indicating
ATA 7700 engine indicating system
ATA 7710 power indicating system
ATA 7711 engine pressure ratio (epr)
ATA 7712 engine bmep/torque indicating
ATA 7713 manifold pressure (mp) indicating
ATA 7714 engine rpm indicating system
ATA 7720 engine temp. indicating system
ATA 7721 cylinder head temp (cht) indicating
ATA 7722 eng. egt/tit indicating system
ATA 7730 engine ignition analyzer system
ATA 7731 engine ignition analyzer
ATA 7732 engine vibration analyzer
ATA 7740 engine integrated instrumen
ATA 7797 engine indicating system wiring
ATA 78 Engine exhaust
ATA 7800 engine exhaust system
ATA 7810 engine collector/tailpipe/nozzle
ATA 7820 engine noise suppressor
ATA 7830 thrust reverser
ATA 7897 engine exhaust system wiring
ATA 79 Engine oil
ATA 7900 engine oil system (airframe)
ATA 7910 engine oil storage (airframe)
ATA 7920 engine oil distribution (airframe)
ATA 7921 engine oil cooler
ATA 7922 engine oil temp. regulator
ATA 7923 engine oil shutoff valve
ATA 7930 engine oil indicating system
ATA 7931 engine oil pressure
ATA 7932 engine oil quantity
ATA 7933 engine oil temperature
ATA 7997 engine oil system wiring
ATA 80 Starting
ATA 8000 engine starting system
ATA 8010 engine cranking
ATA 8011 engine starter
ATA 8012 engine start valves/controls
ATA 8097 engine starting system wiring
ATA 81 Turbocharging
ATA 8100 exhaust turbine system (recip)
ATA 8110 power recovery turbine (recip)
ATA 8120 exhaust turbocharger
ATA 8197 turbocharging system wiring
ATA 82 Water injection
ATA 8200 water injection system
ATA 8297 water injection system wiring
ATA 83 Accessory gearboxes
ATA 8300 accessory gearboxes
ATA 8397 accessory gearbox system wiring
ATA 85 Reciprocating engine
ATA 8500 engine (reciprocating)
ATA 8510 reciprocating engine front section
ATA 8520 reciprocating engine power section
ATA 8530 reciprocating engine cylinder section
ATA 8540 reciprocating engine rear section
ATA 8550 reciprocating engine oil system
ATA 8560 reciprocating engine supercharger
ATA 8570 reciprocating engine liquid cooling
ATA 8597 reciprocating engine system wiring
