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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Auxiliary Power Unit-ACS-DR Drain Fitting Aft
Auxiliary Power Unit-ACS-DR Drain Fitting Aft

Mfr Part#
486Z4426-4

Auxiliary Power Unit Controller Operations
Auxiliary Power Unit Controller Operations
Honeywell International Inc

Mfr Part#
490C-TUS-V05-00

Auxiliary Intercostal
Auxiliary Intercostal
The Boeing Company

Mfr Part#
65-17684-63

USB Outlet Unit (USBou)
USB Outlet Unit (USBou)

Mfr Part#
1327-1-21

USB Outlet Unit (USBou)
USB Outlet Unit (USBou)

Mfr Part#
1327-1-112

Outlet Unit, Dual USB, Hi-Power
Outlet Unit, Dual USB, Hi-Power

Mfr Part#
1327-3-13

Outlet Unit, Dual USB, Hi-Power
Outlet Unit, Dual USB, Hi-Power

Mfr Part#
1327-3-112

USB Outlet Unit (USB Outlet)
USB Outlet Unit (USB Outlet)

Mfr Part#
1327-1-5

USB Outlet Unit
USB Outlet Unit
Astronics Advanced Electronic

Mfr Part#
1327-1-119

USB Outlet Unit, Double, Hi-Power
USB Outlet Unit, Double, Hi-Power

Mfr Part#
1327-3

SUPT Assembly
SUPT Assembly

Mfr Part#
141N5162-9918

SUPT Assembly
SUPT Assembly

Mfr Part#
141N5162-9919

SUPT Assembly
SUPT Assembly

Mfr Part#
141N5162-9925

Lower Assembly Of Auxiliary Power Unit
Lower Assembly Of Auxiliary Power Unit

Mfr Part#
65-37890-1

Auxiliary Power Unit Exhaust Gas Temperature Indicator
Auxiliary Power Unit Exhaust Gas Temperature Indicator

Mfr Part#
124.514-1

USB Outlet Unit
USB Outlet Unit
Astronics Advanced Electronic

Mfr Part#
1327-1-313

USB Outlet Unit (USB Outlet)
USB Outlet Unit (USB Outlet)

Mfr Part#
1327-1-3

USB Outlet Unit
USB Outlet Unit
Astronics Advanced Electronic

Mfr Part#
1327-1-105

USB Outlet Unit
USB Outlet Unit
Astronics Advanced Electronic

Mfr Part#
1327-1-118

USB Outlet Unit
USB Outlet Unit

Mfr Part#
1327-1-120

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.