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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Doubler-Auxiliary Power Unit Support, Firewall
Doubler-Auxiliary Power Unit Support, Firewall
The Boeing Company

Mfr Part#
148W5447U2

Door Assembly - Auxiliary Power Unit Vent
Door Assembly - Auxiliary Power Unit Vent

Mfr Part#
148W5601-27

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

Mfr Part#
148W5601Y21

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

Mfr Part#
148W5601Y22

Clamp-Hose, Auxiliary Power Unit
Clamp-Hose, Auxiliary Power Unit

Mfr Part#
20064S

Plate, Auxiliary Pump Side
Plate, Auxiliary Pump Side
Parker Hannifin

Mfr Part#
20059

Tank Unit Assembly
Tank Unit Assembly

Mfr Part#
20200-0206

Unit Ay
Unit Ay

Mfr Part#
2022538-2

AMS Assembly-Auxiliary Power Unit
AMS Assembly-Auxiliary Power Unit

Mfr Part#
204-53144-29

Bracket Assembly - Auxiliary Power Unit Systems Support
Bracket Assembly - Auxiliary Power Unit Systems Support
The Boeing Company

Mfr Part#
144A9305-20

Bracket Assembly - Auxiliary Power Unit Systems Support
Bracket Assembly - Auxiliary Power Unit Systems Support
The Boeing Company

Mfr Part#
144A9305-18

Bracket Assembly - Auxiliary Power Unit Systems Support
Bracket Assembly - Auxiliary Power Unit Systems Support
The Boeing Company

Mfr Part#
144A9305-16

Door-Bonded Part-Air Driven Unit
Door-Bonded Part-Air Driven Unit
The Boeing Company

Mfr Part#
149W5601Y11

IND-Auxiliary Power Unit Exhaust Gas Temperature
IND-Auxiliary Power Unit Exhaust Gas Temperature
Horizon Aerospace LLC

Mfr Part#
152LMA18

Arm Flap Support Auxiliary D Rib
Arm Flap Support Auxiliary D Rib

Mfr Part#
152Z6145-55

Preservation Bag - Auxiliary Power Unit, Bottom Barrier
Preservation Bag - Auxiliary Power Unit, Bottom Barrier

Mfr Part#
165151-3

Preservation Bag - Auxiliary Power Unit, Top Barrier
Preservation Bag - Auxiliary Power Unit, Top Barrier

Mfr Part#
165151-4

OUTBDAUX
OUTBDAUX
The Boeing Company

Mfr Part#
166Z1523-43

OUTBDAUX
OUTBDAUX
The Boeing Company

Mfr Part#
166Z1523-45

APU Right Aft Panel, Insulation Blanket
APU Right Aft Panel, Insulation Blanket
Tighitco Inc

Mfr Part#
16H40198-16

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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