Standard Practice Airframe
ATA 20
Air conditioning
21
Auto flight
ATA 22
Communications
ATA 23
Electrical Power
ATA 24
Equipment and Furnishings
ATA 25
Fire Protection
ATA 26
Flight control
ATA 27
Fuel
ATA 28
Hydraulic power
ATA 29
Ice and protection
ATA 30
Indicating recording systems
ATA 31
Landing Gear
ATA 32
Lighting
ATA 33
Navigation
ATA 34
Oxygen
ATA 35
Pneumatics
ATA 36
Vaccum
ATA 37
Waste/ water
ATA 38
Integrated modular avionics
ATA 42
Cabin systems
ATA 44
Central mx system
ATA 45
Information systems
ATA 46
Inert gas systems
ATA 47