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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Panel Assembly - P40 Panel, Service and Auxiliary Power Unit
Panel Assembly - P40 Panel, Service and Auxiliary Power Unit
The Boeing Company

Mfr Part#
284W8041-712

Panel Assembly - P40 Panel, Service and Auxiliary Power Unit
Panel Assembly - P40 Panel, Service and Auxiliary Power Unit
The Boeing Company

Mfr Part#
284W8041-709

Panel Assembly - P40 Panel, Service and Auxiliary Power Unit
Panel Assembly - P40 Panel, Service and Auxiliary Power Unit
The Boeing Company

Mfr Part#
284W8041-104

Unit Assembly
Unit Assembly

Mfr Part#
285T0001-21

Module Assembly-AAU
Module Assembly-AAU

Mfr Part#
285T0001-35

Module Assembly-AAU
Module Assembly-AAU

Mfr Part#
285T0001-37

Audio Accessory Unit
Audio Accessory Unit

Mfr Part#
285T0001-70

Unit Assembly
Unit Assembly
BAE Systems Controls Inc

Mfr Part#
285T0001-55

Unit Ay
Unit Ay

Mfr Part#
285T0001-6

Unit Assembly
Unit Assembly

Mfr Part#
285T0001-53

Unit Ay
Unit Ay

Mfr Part#
285T0001-19

Unit Assembly
Unit Assembly

Mfr Part#
285T0001-23

AB1050R To Auxiliary Power Unit Firewall
AB1050R To Auxiliary Power Unit Firewall

Mfr Part#
2861E4726-013

Auxiliary Cargo Control Panel Assembly
Auxiliary Cargo Control Panel Assembly
BAE Systems Controls Inc

Mfr Part#
285U0319-1

PW Assembly-Power Supply
PW Assembly-Power Supply

Mfr Part#
285W0047-9

Auxiliary Power Unit Fuel Boost Pump Control
Auxiliary Power Unit Fuel Boost Pump Control
The Boeing Company

Mfr Part#
286A1722-807

E6-2 Shelf-Auxiliary Power Unit
E6-2 Shelf-Auxiliary Power Unit

Mfr Part#
286A0626-002

HPT Exit Or LPT Inlet Pressure-A1-Auxiliary Power Unit Battery Bus Distribution
HPT Exit Or LPT Inlet Pressure-A1-Auxiliary Power Unit Battery Bus Distribution
The Boeing Company

Mfr Part#
286T1048-0DB

HPT Exit Or LPT Inlet Pressure-A1 Auxiliary Power Unit Batt Bus Distribution
HPT Exit Or LPT Inlet Pressure-A1 Auxiliary Power Unit Batt Bus Distribution
The Boeing Company

Mfr Part#
286T1050-0EN

HPT Exit Or LPT Inlet Pressure-A1 Auxiliary Power Unit Batt Bus Distribution
HPT Exit Or LPT Inlet Pressure-A1 Auxiliary Power Unit Batt Bus Distribution

Mfr Part#
286T1048-008

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.