Aircraft ManualsATA– Air transport Association of America

Manuals ??????????

A.T.A. 100• This is a universally accepted system for

numbering aircraft maintenance documentation.• The chapter number assigned to a specific

system is the same, regardless of aircraft manufacturer.

• For example, ATA Chapter 21 is “Air Conditioning” on Boeings, Lockheeds, Airbus, etc.

Revisions must be up to date

ATA Chapters

• Each “Chapter” represents a major aircraft system. Such as…

21 Air conditioning22 Auto flight23 Communications24 Electrical Power25 Equipment and Furnishings

Subsections• 21 31 Cabin Pressure Controller• 21 32 Cabin Pressure Indicator• 21 33 Pressure Regulation/Outflow valve• 21 34 Cabin Pressure Sensor

Components

• A third number completes the ATA chapter reference, and is usually used to define a specific component in a subsystem.

• For example…27 10 14• 27 00 FLIGHT CONTROL SYSTEM• 27 10 ROLL CONTROL• 27 10 14 AILERON• The 14 denotes the specific component in the aileron control

system…in this case, the aileron itself

Cessna and small aircraft

Each Section is laid out in order:

*Disassembly *Cleaning•Inspection •Repair•Reassembly•Troubleshooting

Parts Manuals

As a part number is an identifier of a part design (independent of its instantiations), a serial number is a unique identifier of a particular instantiation of that part design. In other words, a part number identifies any particular (physical) part as being made to that one unique design; a serial number, when used, identifies a particular (physical) part (one physical instance)