ATA CHAPTER

ATA Description
53 - 5314 Fuselage Main, Keel

Fuselage

For reports of the main fuselage keel beams.

24 - 2421 AC Generator-Alternator

Electrical Power

The engine driven component that generates alternating current (AC) for aircraft with AC electrical systems. Does not include AC alternators on light piston-engine power aircraft with direct current (DC) electrical systems. Does not include single units used for both engine starting and electric power generating. Typical parts are bearing, shaft, housing, and integrated drive generator (IDG) which contains both AC and DC generators.

53 - 5315 Fuselage Main, Floor Beam

Fuselage

For reports of the main fuselage floor beams.

24 - 2422 AC Inverter

Electrical Power

The component which converts direct current to alternating current.

53 - 5320 Fuselage Miscellaneous Structure

Fuselage

For reports of miscellaneous structure on the main fuselage structure which aids in the support of theprimary structure. Includes such items as brackets, channels, stiffeners, clips, doublers, etc. Does notinclude movable partitions which are covered in JASC Chapter 25.

24 - 2423 Phase Adapter

Electrical Power

The component used to change the alternating current (AC) phase of output for specific using equipment.

53 - 5321 Fuselage Floor Panel

Fuselage

For reports of the interior floor panels within the main fuselage structure.

24 - 2424 AC Regulator

Electrical Power

The component that regulates the AC voltage from the alternator-generator to maintain a set voltage output for the using systems (i.e., generator control unit).

53 - 5322 Fuselage Internal Mounting Structure

Fuselage

For reports of the internal mounting structure which aids in the support of the fuselage structure.

24 - 2425 AC Indicating System

Electrical Power

The equipment indicating, voltage, current flow, and system faults in the AC power systems.