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.
Compatible Platform
Bell 429
Boeing AH-64 Apache
Lockheed Martin C-130 Hercules
Pilatus PC-12 NG
Pilatus PC-12 NGX
Sikorsky H-60
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
Product Number
Parts
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Compatible_Platform@compatible_platform
Filters
| Part Number | Description | Compatible Aircraft | Order Online |
|---|---|---|---|
| 2704506-5 | MOTOR OUTLINE, DIRECT CURRENT | Buy Online | |
| 3800702-1 | ENGINE OUTLINE, GAS TURBINE | Buy Online | |
| 3800702-2 | ENGINE OUTLINE, GAS TURBINE | Buy Online | |
| 3827534-5 | SEAL RADIAL CMPSR | Buy Online | |
| 3876223-1 | TRANSDUCER, MOTIONAL PICKUP | Buy Online | |
| 3876225-2 | SENSOR PRESS INL | Buy Online | |
| 3876226-1 | SENSOR, PRESSURE - TOTAL | Buy Online | |
| 3876227-2 | SENSOR PRESS DIFF | Buy Online | |
| 3876271-1 | THERMOCOUPLE | Buy Online | |
| 3876287-1 | OUTLINE, DATA MEMORY MODULE | Buy Online | |
| 3876330-2 | LOW OIL QUANTITY SWITCH | Buy Online | |
| 3883836-2 | MANIFOLD, FUEL, PRIMARY | Buy Online | |
| 3885004-5 | DUCT, AIR-BLEED | Buy Online | |
| 3885084-2 | DUCT | Buy Online | |
| 3886188-3 | ACTUATOR, INLET GUIDE VANE ASSY | Buy Online | |
| 3888579-202 | ELECTRONIC CONTROL BOX | Buy Online | |
| 6430587-1 | ADAPTER | Buy Online | |
| 67620964-2 | BRUSH ASSEMBLY, MOTOR | Buy Online | |
| 692546-4 | VALVE SOL NO | Buy Online | |
| 70720156-1 | DUCT - COOLING FAN EXIT | Buy Online | |
| 70720240-2 | SYSTEM KIT, APU, 131-9J | Buy Online | |
| 70720241-2 | SYSTEM KIT, APU, 131-9JC | Buy Online | |
| 70720604-1 | ELECTRONIC CONTROL UNIT, APU | Buy Online | |
| 70720725-1 | ENGINE OUTLINE, GAS TURBINE | Buy Online | |
| 70720860-10 | ELECTRONIC CONTROL UNIT, APU | Buy Online | |
| 70721172-1 | ELECTRONIC CONTROL UNIT, APU | Buy Online | |
| 70722227-2 | ENGINE ACCESSORIES | Buy Online | |
| 70723947-1 | FAN ASSEMBLY, OIL COOLING | Buy Online |
