ATA Chapter Codes

Ordered Alphabetically by System
CH System
83 Accessory Gear Boxes
21 Air Conditioning
49 Airborne Auxiliary Power
22 Autopilot
91 Charts
23 Communications
52 Doors
24 Electric Power
72 Engine
75 Engine Air
76 Engine Controls
78 Engine Exhaust
73 Engine Fuel & Control
74 Engine Ignition
77 Engine Indicating
79 Engine Oil
72 Engine Reciprocating
80 Engine Starting
72 Engine Turbine
82 Engine Water Injection
25 Equipment & Furnishing
26 Fire Protection
27 Flight Controls
28 Fuel
53 Fuselage
29 Hydraulic Power
30 Ice & Rain Protection
31 Instruments
32 Landing Gear
33 Lights
54 Nacelles/Pylons
34 Navigation
35 Oxygen
11 Placards
36 Pneumatic
71 Power Plant-General
61 Propellers
55 Stabilizers
70 Standard Practices Engine
60 Std. Practices-Props
51 Structures
81 Turbines
37 Vacuum
38 Water/Waste
56 Windows
57 Wings
Ordered Numerically by Code
CH System
11 Placards
21 Air Conditioning
22 Autopilot
23 Communications
24 Electric Power
25 Equipment & Furnishing
26 Fire Protection
27 Flight Controls
28 Fuel
29 Hydraulic Power
30 Ice & Rain Protection
31 Instruments
32 Landing Gear
33 Lights
34 Navigation
35 Oxygen
36 Pneumatic
37 Vacuum
38 Water/Waste
49 Airborne Auxiliary Power
51 Structures
52 Doors
53 Fuselage
54 Nacelles/Pylons
55 Stabilizers
56 Windows
57 Wings
60 Std. Practices-Props
61 Propellers
70 Standard Practices Engine
71 Power Plant-General
72 Engine
72 Engine Turbine
72 Engine Reciprocating
73 Engine Fuel & Control
74 Engine Ignition
75 Engine Air
76 Engine Controls
77 Engine Indicating
78 Engine Exhaust
79 Engine Oil
80 Engine Starting
81 Turbines
82 Engine Water Injection
83 Accessory Gear Boxes
91 Charts