331 Series Auxiliary Power Units
Overview
The 331 Series Auxiliary Power Units (APUs) provide high levels of reliability with economical maintenance and have the highest power-to-weight ratio in their class. They can be found on many wide-body applications for both Boeing and Airbus.
The 331-200 introduced several new technologies to the world of auxiliary power. It was the first electronically controlled APU and the first to employ the same internal design as an existing turboprop engine, dramatically reducing development time and manufacturing costs.
The 331-500 series became the first Honeywell APU to use an eductor for oil cooling, eliminating the need for oil cooling fans. The success of this design led to its use on both the Honeywell 131-9B and RE200 series.
The 331-200 introduced several new technologies to the world of auxiliary power. It was the first electronically controlled APU and the first to employ the same internal design as an existing turboprop engine, dramatically reducing development time and manufacturing costs.
The 331-500 series became the first Honeywell APU to use an eductor for oil cooling, eliminating the need for oil cooling fans. The success of this design led to its use on both the Honeywell 131-9B and RE200 series.
Specifications
Compatible Platform
- Airbus A300
- Boeing
Product Number
Parts
Filters
| Part Number | Description | Compatible Aircraft | Order Online |
|---|---|---|---|
| 3800298-1 | ENGINE GAS TURB | Buy Online | |
| 3800298-1-2 | ENGINE GAS TURB | Buy Online | |
| 3800550-1 | ENGINE OUTLINE GAS TURBINE | Buy Online | |
| 3822250-2 | IMPELLER, COMPRESSOR, SECOND STAGE | Buy Online | |
| 3822341-5 | IMPELLER, COMPRESSOR, SECOND STAGE | Buy Online | |
| 3822468-3 | IMPELLER, COMPRESSOR, LOAD | Buy Online | |
| 3822572-1 | IMPELLER, COMPRESSOR, LOAD | Buy Online | |
| 3822608-1 | COMPRESSOR ROTOR, CENT, ENG - 1ST STAGE | Buy Online | |
| 3822611-1 | IMPELLER, COMPRESSOR FIRST STAGE | Buy Online | |
| 3822612-1 | IMPELLER, LOAD COMPRESSOR | Buy Online | |
| 3826919-5 | HOUSING, ENGINE COMP - 2ND STG | Buy Online | |
| 3827268-1 | BELLOWS, OIL SEAL | Buy Online | |
| 3827534-5 | SEAL RADIAL CMPSR | Buy Online | |
| 3840004-5 | BLADE TURBINE ROTOR, FIRST STAGE | Buy Online | |
| 3840007-1 | DISK, AXIAL, TURBINE SECOND STAGE | Buy Online | |
| 3840019-1 | DISK, AXIAL, TURBINE FIRST STAGE | Buy Online | |
| 3840022-4 | WHEEL ASSEMBLY, TURBINE, AXIAL FLOW, THI | Buy Online | |
| 3840111-8 | ROTOR ASSY, TURBINE AXIAL, 3RD STAGE | Buy Online | |
| 3840204-5 | TURBINE ASSY | Buy Online | |
| 3842101-4 | DISK,ROTOR,TURBINE FIRST STAGE | Buy Online | |
| 3842103-9 | BLADE ASSY, TURBINE ROTOR, FIRST STAGE | Buy Online | |
| 3842151-2 | ROTOR ASSY 1STG | Buy Online | |
| 3842151-3 | ROTOR ASSY 1STG | Buy Online | |
| 3842152-1 | DISK, ROTOR, TURBINE FIRST STAGE | Buy Online | |
| 3842153-3 | BLADE, TURBINE ROTOR, FIRST STAGE | Buy Online | |
| 3842155-4 | ROTOR ASSY TURB - 2STG | Buy Online | |
| 3842156-1 | DISK, TURBINE, STAGE 2 | Buy Online | |
| 3842160-6 | TURBINE ROTOR ASSY 3RD STAGE | Buy Online | |
| 3842329-4 | BLADE, TURBINE ROTOR SECOND STAGE | Buy Online | |
| 3842330-3 | DISK, TURBINE, STAGE 2 | Buy Online | |
| 3842400-2 | DISK, ROTOR, TURBINE FIRST STAGE | Buy Online | |
| 3842401-2 | ROTOR ASSEMBLY, TURBINE, 1ST STAGE | Buy Online | |
| 3842402-2 | DISK, TURBINE, 2ND STAGE | Buy Online | |
| 3842403-2 | ROTOR ASSEMBLY, TURBINE, AXIAL, 2ND STAG | Buy Online | |
| 3844602-5 | NOZZLE, SEGMENT | Buy Online | |
| 3844854-1 | SUPPORT ASSEMBLY, TURBINE BEARING | Buy Online | |
| 3844986-1 | SEAL, TURB REAR BRG | Buy Online | |
| 3860835-2 | BEARING, ROLLER, CYLINDRICAL | Buy Online | |
| 3876195-10 | EXCITER, DUAL LOW TENSION IGNITION | Buy Online | |
| 3876195-9 | EXCITER | Buy Online | |
| 3876255-2 | Pressure Sensor (LOP) | Buy Online | |
| 3888058-5 | EXCITER IGNITION | Buy Online | |
| 3888058-7 | EXCITER IGNITION | Buy Online | |
| 70721384-1 | ELECTRONIC CONTROL UNIT, APU | Buy Online | |
| 70721386-1 | ENGINE OUTLINE, 331-400C | Buy Online | |
| 70721980-1 | ENGINE OUTLINE, GAS TURBINE | Buy Online | |
| 70723291-1 | BLADE, TURBINE ROTOR, FIRST STAGE | Buy Online |
