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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Inboard Auxiliary Support Assembly
Inboard Auxiliary Support Assembly

Mfr Part#
115W3680-3

Inboard Auxiliary Support Assembly
Inboard Auxiliary Support Assembly

Mfr Part#
115W3680-4

Inboard Auxiliary Support Assembly
Inboard Auxiliary Support Assembly

Mfr Part#
115W3680-45

Outboard Auxiliary Support Assembly
Outboard Auxiliary Support Assembly

Mfr Part#
115W3680-26

Outboard Auxiliary Support Assembly
Outboard Auxiliary Support Assembly

Mfr Part#
115W3680-22

Auxiliary Power Unit Door Assembly-700
Auxiliary Power Unit Door Assembly-700
The Boeing Company

Mfr Part#
148A6350-81

Auxiliary Power Unit Door Assembly (-800)
Auxiliary Power Unit Door Assembly (-800)
The Boeing Company

Mfr Part#
148A6350-78

Auxiliary Power Unit Door Assembly
Auxiliary Power Unit Door Assembly

Mfr Part#
148A6350-26

Auxiliary Power Unit Door Assembly (-800)
Auxiliary Power Unit Door Assembly (-800)
The Boeing Company

Mfr Part#
148A6350-84

Auxiliary Power Unit Door Assembly (-800)
Auxiliary Power Unit Door Assembly (-800)
The Boeing Company

Mfr Part#
148A6350-61

Auxiliary Power Unit Door Assembly (-800)
Auxiliary Power Unit Door Assembly (-800)
The Boeing Company

Mfr Part#
148A6350Y61

Auxiliary Power Unit Door Assembly (-800)
Auxiliary Power Unit Door Assembly (-800)
The Boeing Company

Mfr Part#
148A6350-70

Auxiliary Power Unit Door Assembly
Auxiliary Power Unit Door Assembly

Mfr Part#
148A6350-4

Auxiliary Power Unit Door Assembly
Auxiliary Power Unit Door Assembly
The Boeing Company

Mfr Part#
148A6350-48

Auxiliary Power Unit Door Assembly-Polished (- 800)
Auxiliary Power Unit Door Assembly-Polished (- 800)

Mfr Part#
148A6350-79

Auxiliary Power Unit Door Assembly
Auxiliary Power Unit Door Assembly
The Boeing Company

Mfr Part#
148A6350-28

Auxiliary Power Unit Door Assembly
Auxiliary Power Unit Door Assembly
The Boeing Company

Mfr Part#
148A6350-93

Auxiliary Power Unit Door Assembly, Aluminum
Auxiliary Power Unit Door Assembly, Aluminum

Mfr Part#
148A6350-75

Auxiliary Power Unit Door Assembly
Auxiliary Power Unit Door Assembly

Mfr Part#
148A6350-16

Auxiliary Power Unit Door Assembly
Auxiliary Power Unit Door Assembly
The Boeing Company

Mfr Part#
148A6350-54

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.

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