P2012
AIRCRAFT MAINTENANCE MANUAL
The first pair of numbers shows the system. System 57 is the wings. Chapter 57 contains
the data for the wings.
The second pair of numbers shows the sub-system. Sub-system 50 is the Trailing Edge
Flaps. Chapter 57, section 50 contains the data for the trailing edge flaps installation.
The third pair of numbers shows a unit. A unit could be the flap itself. Only complex
systems use unit numbers.
B. Groups of Chapters
GROUP ATA No. CHAPTER TITLE
GROUP A 01 Introduction
02 Organization and Handling of
the Manual
GROUP B 03 General Description of the
Aircraft
04 Airworthiness Limitations (EASA
approved Chapter)
05 Time Limits and Maintenance
Checks
06 Dimensions and Inspection
Caps
07 Lifting and Shoring
08 Leveling and Weighing
09 Towing and Taxiing
10 Parking, Mooring, Storage and
Return to Service
11 Placards and Markings
12 Servicing
GROUP C 20 Standard Practices - Airframe
21 Heating and Ventilation
22 Autopilot
23 Communication Systems
24 Electrical Power
25 Equipment and Furnishings
26 Fire Protection
27 Flights Controls
28 Fuel System
30 Ice Protection
31 Indicating and Recording
Systems
32 Landing Gear
33 Lights
34 Navigation
GROUP D 51 Standard Practices and
Structures
52 Doors
53 Fuselage
55 Stabilizers
56 Windows
57 Wings
GROUP E 61 Propellers
GROUP F 71 Power Plant
72 Engine
74 Ignition
76 Engine Controls
78 Exhaust
79 Oil System
80 Starting
GROUP G 92 Electrical System
INTRODUCTION
Page 2
5
th
Edition - Rev. 0
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