131 Series Auxiliary Power Units
Overview
The 131-9 Auxiliary Power Unit (APU) 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.
Honeywell has released a high efficiency mode (HEM) upgrade for the 131-9A Auxiliary Power Unit for single-aisle Airbus aircraft and 131-9B Auxiliary Power Unit for single-aisle Boeing aircraft. HEM supports airlines in achieving greater fuel-efficiency, reduced carbon emissions, improved time on wing, and compliance with more stringent regulatory guidelines. It was also chosen for the Bombardier C-Series.
The powerful combination of hardware and advanced software deliver HEM benefits that improve operational and bottom-line performance for operators. The redesigned diffuser is critical, but it’s the software that autonomously controls the diffuser to regulate airflow into the compressor section. As a result, the engine burns fuel more efficiently at lower temperatures, which reduces wear and tear on critical engine parts.
Honeywell has released a high efficiency mode (HEM) upgrade for the 131-9A Auxiliary Power Unit for single-aisle Airbus aircraft and 131-9B Auxiliary Power Unit for single-aisle Boeing aircraft. HEM supports airlines in achieving greater fuel-efficiency, reduced carbon emissions, improved time on wing, and compliance with more stringent regulatory guidelines. It was also chosen for the Bombardier C-Series.
The powerful combination of hardware and advanced software deliver HEM benefits that improve operational and bottom-line performance for operators. The redesigned diffuser is critical, but it’s the software that autonomously controls the diffuser to regulate airflow into the compressor section. As a result, the engine burns fuel more efficiently at lower temperatures, which reduces wear and tear on critical engine parts.
Specifications
Key Differentiators
Features & Benefits
- Reduces carbon dioxide emissions by up to 22 metric tons per APU per year, depending on operating conditions
Key Savings
- 1-2% improvement in fuel efficiency
- Reduced overall maintenance costs and lower spares requirements, thanks to longer time-on-wing
Compatible Platform
- Bell 429
- Boeing AH-64 Apache
- Lockheed Martin C-130 Hercules
- Pilatus PC-12 NG
- Pilatus PC-12 NGX
- Sikorsky H-60
Product Number
Parts
Compatible_Platform@compatible_platform
Filters
| Part Number | Description | Compatible Aircraft | Order Online |
|---|---|---|---|
| 3800702-1 | ENGINE OUTLINE, GAS TURBINE | Buy Online | |
| 3840165-4 | TURBINE ROTOR ASSEMBLY SECOND STAGE | Buy Online | |
| 4500001B | APU | Buy Online | |
| 6430587-1 | ADAPTER | Buy Online | |
| 70720240-2 | SYSTEM KIT, APU, 131-9J | Buy Online | |
| 70720241-2 | SYSTEM KIT, APU, 131-9JC | Buy Online | |
| 70722227-2 | ENGINE ACCESSORIES | Buy Online |
