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 Arm Rib Assembly
Auxiliary Arm Rib Assembly

Mfr Part#
114A7131-1

Auxiliary Arm Rib Assembly
Auxiliary Arm Rib Assembly
The Boeing Company

Mfr Part#
114A7112-1

Auxiliary Arm Rib Assembly
Auxiliary Arm Rib Assembly

Mfr Part#
114A7112-2

Auxiliary Arm Rib
Auxiliary Arm Rib

Mfr Part#
114A7122-3

Auxiliary Rib Assembly
Auxiliary Rib Assembly

Mfr Part#
114T4517-18

Auxiliary Rib Assembly
Auxiliary Rib Assembly
The Boeing Company

Mfr Part#
114T4521-1

Auxiliary Arm Assembly
Auxiliary Arm Assembly
The Boeing Company

Mfr Part#
114T4140-121

Auxiliary Rib Assembly
Auxiliary Rib Assembly
The Boeing Company

Mfr Part#
114T4515-5

Auxiliary Rib Assembly
Auxiliary Rib Assembly
The Boeing Company

Mfr Part#
114T4514-9

Auxiliary Rib Assembly
Auxiliary Rib Assembly
The Boeing Company

Mfr Part#
114T4514-402

Auxiliary Arm Assembly
Auxiliary Arm Assembly
The Boeing Company

Mfr Part#
114T4140-115

Auxiliary Rib System
Auxiliary Rib System
The Boeing Company

Mfr Part#
114T4513-401

Auxiliary Rib Assembly
Auxiliary Rib Assembly
The Boeing Company

Mfr Part#
114T4516-17

Auxiliary Rib Assembly
Auxiliary Rib Assembly

Mfr Part#
114T4519-1

Auxiliary Rib Assembly
Auxiliary Rib Assembly
The Boeing Company

Mfr Part#
114T4518-1

Auxiliary Rib Assembly
Auxiliary Rib Assembly

Mfr Part#
114T4519-2

Auxiliary Rib Assembly
Auxiliary Rib Assembly

Mfr Part#
114T4519-14

Auxiliary Rib Assembly
Auxiliary Rib Assembly
The Boeing Company

Mfr Part#
114T4518-13

Auxiliary Rib Assembly
Auxiliary Rib Assembly
The Boeing Company

Mfr Part#
114T4512-9

Outlet Unit, Alternating Current
Outlet Unit, Alternating Current

Mfr Part#
1303-7-123

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.