Airframe APUs

Aircraft auxiliary power units (APUs) provide power to various systems when the main engines are not running. These units offer an efficient power supply for an aircraft, ensuring smooth operations and enhanced safety. Trusted manufacturers of APUs in aviation like Boeing, BAE Systems Controls Inc., and Honeywell guarantee quality and durable products meant to withstand the harsh conditions seen by aircraft. Browse our selection of aircraft APUs to find the perfect solution for your needs.
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Cradle-Auxiliary Power Unit
Cradle-Auxiliary Power Unit

Mfr Part#
A49001-78

Plug-A380 Phaseout
Plug-A380 Phaseout

Mfr Part#
289217

Auxiliary Power Unit Kit
Auxiliary Power Unit Kit
The Boeing Company

Mfr Part#
DZZ7385-1

Unit Assembly
Unit Assembly

Mfr Part#
351N1101-50

AUX POWER,
AUX POWER,
Forecastable
Forecastable
USM Airframe Serviceable
Boeing Distribution (formerly Aviall)
Vented Door Assembly, Auxiliary Power System
Vented Door Assembly, Auxiliary Power System
The Boeing Company

Mfr Part#
355T0253-30

Auxiliary Power Unit Duct Assembly
Auxiliary Power Unit Duct Assembly
The Boeing Company

Mfr Part#
353W2100-25

Auxiliary Track Assembly
Auxiliary Track Assembly
The Boeing Company

Mfr Part#
116A8460-9

Auxiliary Power Unit Door Assembly
Auxiliary Power Unit Door Assembly

Mfr Part#
148A6350-30

Printed Circuit Assembly Auxiliary Power Unit Controller
Printed Circuit Assembly Auxiliary Power Unit Controller

Mfr Part#
69-78355-9

Auxiliary Track Assembly
Auxiliary Track Assembly
The Boeing Company

Mfr Part#
116A8430-10

233N6203-356 Panel Assembly - Auxiliary Power Unit & Ampere; Cargo Fire Contracting Officer
233N6203-356 Panel Assembly - Auxiliary Power Unit & Ampere; Cargo Fire Contracting Officer

Mfr Part#
233N6203-356

Unit Assembly
Unit Assembly

Mfr Part#
251N4052-5

Auxiliary Track Assembly
Auxiliary Track Assembly
The Boeing Company

Mfr Part#
116A8450-10

Panel Sub-Assembly - Auxiliary Power Unit And Cargo Fire Control
Panel Sub-Assembly - Auxiliary Power Unit And Cargo Fire Control

Mfr Part#
233N6203-249

Intake Assembly - Auxiliary Power System
Intake Assembly - Auxiliary Power System
The Boeing Company

Mfr Part#
353W2100-33

Auxiliary Power Unit
Auxiliary Power Unit

Mfr Part#
170101-106A

Panel Assembly - Auxiliary Power Unit And Cargo Fire Control
Panel Assembly - Auxiliary Power Unit And Cargo Fire Control

Mfr Part#
233N6203-1106

Auxiliary Power Unit Assembly-Basic
Auxiliary Power Unit Assembly-Basic

Mfr Part#
65-50901-44

Auxiliary Power Unit Inlet Door
Auxiliary Power Unit Inlet Door
Simmonds Precision Products Inc

Mfr Part#
DL2033M4-1

Frequently Asked Questions

What is an APU in an aircraft?

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An APU in an aircraft is a device that provides energy for functions other than propulsion, including powering hydraulic systems, air conditioning, and airframe electrical systems.

How does an aircraft APU work?

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An APU in aviation works by generating electrical power, providing air for starting engines, and powering other systems when the main engines are off.

DISCLAIMER: Product information provided “as is.” Boeing may add, change, discontinue or remove this information at any time. Product photos may not be exact match to product delivered. See terms & conditions.