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