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Pricing & Surcharge Updates: On May 8, 2023, Honeywell updated our catalog pricing for select parts and ended surcharges for new catalog based (non-contract) orders. Read More

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131 Series Auxiliary Power Units

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131 Series APUs

The 131 family of auxiliary power units (APUs) is one of the most successful of all time, with more than 100 million hours of in-service use.

Overview
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Compatible Aircraft

The 131-9 auxiliary power unit (APU), previously designed for the Boeing MD-90 aircraft, gained an immediate following. With the introduction of the 131-9B it became standard equipment on the Boeing B737NG family of aircraft, as well as the with the introduction of the 131-9A as airline selectable on the Airbus A320 family. It was then also chosen for the Bombardier C-Series.

It’s easy to understand its popularity. The 131-9 introduced a two-stage axial turbine for longer engine life and a single starter/generator that uses electrical power to start the APU, and then becomes a generator once it’s running. This has led to the 131 Series becoming one of the most successful APUs with more than 100 million hours of in-service use.

Brochures (2)

Size

Auxiliary Power Unit Overview

Size

2.14MB

131-9A Auxiliary Power Unit High-Efficiency Mode

Size

1.79MB

131-9A APU High Efficiency Mode – Upgrade Now

Honeywell has released a High Efficiency Mode (HEM) upgrade for its 131-9A auxiliary power unit for single-aisle Airbus aircraft. HEM meets our customers’ needs for more power on the aircraft, greater fuel-efficiency and a smaller environmental footprint.

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More Power, Greater Fuel Efficiency and Smaller Environmental Footprint

Honeywell has released a High Efficiency Mode (HEM) upgrade for the 131-9A Auxiliary Power Unit for Airbus Single Aisle aircrafts. Upgrade now!

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