ATA Chapter Codes

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