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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Marker
Marker
The Boeing Company

Mfr Part#
BAC27TEX3255

Aluminum Foil Marker (Auxiliary Power Unit Fire Bot)
Aluminum Foil Marker (Auxiliary Power Unit Fire Bot)
The Boeing Company

Mfr Part#
BAC27TEX7341

Alum Foil Marker - Auxiliary Power Unit Fuel Supply Pump
Alum Foil Marker - Auxiliary Power Unit Fuel Supply Pump
The Boeing Company

Mfr Part#
BAC27TFS0041

This Auxiliary Power Unit GTCP131-9B SN P-5218 Is Owned B
This Auxiliary Power Unit GTCP131-9B SN P-5218 Is Owned B

Mfr Part#
BAC29PPS41754

This Auxiliary Power Unit GTCP131-9B SN P-5226 Is Owned B
This Auxiliary Power Unit GTCP131-9B SN P-5226 Is Owned B

Mfr Part#
BAC29PPS41914

SUPT A
SUPT A

Mfr Part#
AWE7000-409

Duct Engine Bleed Air Auxiliary Power Unit Pneumatic Auxiliary Power Unit
Duct Engine Bleed Air Auxiliary Power Unit Pneumatic Auxiliary Power Unit
Meggitt Aerospace

Mfr Part#
BA3656-700MK11

Seal Diffuser Auxiliary Power Unit
Seal Diffuser Auxiliary Power Unit
Meggitt Aerospace

Mfr Part#
BA7127

Marker-Full Auxiliary Power Unit Oil Tank...
Marker-Full Auxiliary Power Unit Oil Tank...
The Boeing Company

Mfr Part#
BAC27DAP0022

Actuator Auxiliary
Actuator Auxiliary
Honeywell International Inc

Mfr Part#
JE-5

Lock-Rudder Power Control Unit
Lock-Rudder Power Control Unit
The Boeing Company

Mfr Part#
K27038-36

Adapter-Aileron PCU Removal/Installation
Adapter-Aileron PCU Removal/Installation
The Boeing Company

Mfr Part#
K27003-1

Auxiliary Power Unit Exhaust Cover
Auxiliary Power Unit Exhaust Cover

Mfr Part#
KB737APUS0P

Air Traffic Service Unit - Air Traffic Services Unit
Air Traffic Service Unit - Air Traffic Services Unit
Diehl Aviation Gilching GmbH

Mfr Part#
LA2T0G20503B040

Sling-Auxiliary Power Unit Generator
Sling-Auxiliary Power Unit Generator

Mfr Part#
OHME65B98605-1

Panel Assembly, Power
Panel Assembly, Power
GE Aviation Systems Ltd

Mfr Part#
PDP421-1

Panel Assembly, Power
Panel Assembly, Power
GE Aviation Systems Ltd

Mfr Part#
PDP421-3

Panel Assembly, Power
Panel Assembly, Power
GE Aviation Systems Ltd

Mfr Part#
PDP422-1

Panel Assembly, Power
Panel Assembly, Power
GE Aviation Systems Ltd

Mfr Part#
PDP422-3

Unit Assembly
Unit Assembly
Gogo LLC

Mfr Part#
P19667

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.