Bell 407 HMU Overhaul, Repair & Exchange
Triumph-authorized HMU support for Rolls-Royce M250-powered Bell 407 helicopters.
Southwest Fuel Systems provides maintenance, repair, overhaul, testing and exchange support for Triumph-manufactured Rolls-Royce M250 HMUs. From our FAA/EASA Part 145 facility in Stroud, Oklahoma, we support helicopter operators, MRO facilities and fleet customers worldwide with OEM-authorized HMU service and dedicated M250 fuel-system expertise. SouthWest Fuel Systems is one of only two Triumph-authorized M250 HMU service providers worldwide.
Bell 407 HMU Support
Dedicated M250 Fuel-Control Expertise
The Bell 407 relies on the Rolls-Royce M250 FADEC fuel-control system, which incorporates an electronic control unit and an engine-mounted hydromechanical unit.
Southwest Fuel Systems specializes in M250 HMU overhaul and repair, with dedicated tooling, test capability and experience supporting Triumph fuel-control products.
For Bell 407 operators, our capabilities include:
- HMU Overhaul
- HMU Repair
- HMU Exchange
- Functional Testing
- Service Bulletin Compliance
- Troubleshooting & Technical Support
- AOG Support
Supported Rolls-Royce M250 HMU Part Numbers
Southwest Fuel Systems supports the following Rolls-Royce and corresponding Triumph HMU part numbers:
ROLLS-ROYCE PART NUMBER |
TRIUMPH PART NUMBER |
|---|---|
| 23057878/23057879 | 113200-01A1 |
| 23064100 | 113200-01A2 |
| 23057880 | 113200-02A2 |
| 23057883 | 113200-02C2 |
| 23068653 | 113200-02C3 |
| 23069550 | 113200-02C4 |
| 23072207 | 113200-03C4 |
| 23072732 | 113200-03C6 |
| 23075392 | 113200-04A1 |
| 23078033 | 113200-04A5 |
| M250-10152 | 113200-04B5 |
| 23072726 | 113200-03C5 |
| 23075496 | 113200-03C7 |
| 23078035 | 113200-03C10 |
| 23078056 | 113200-03C8 |
| 23067961 | 114070-01A1 |
| 23068651 | 114070-01A |
| 23069251 | 114070-01A3 |
| 23069551 | 114070-01A4 |
| 23070726 | 114375-01A1 |
| 23072208 | 114070-03A4 |
| 23072731 | 114070-03A6 |
| 23075390 | 114070-04A1 |
| 23078029 | 114070-04A5 |
| M250-10151 | 114070-04B5 |
| M250-10239 | 114070-04B6 |
| M250-10136 | 114070-04A6 |
| 23072725 | 114070-03A5 |
| 23078029 | 114070-04A4 |
| 23078030 | 114070-03A10 |
| 23078031 | 114070-03A12 |
| 23078032 | 114070-03A9 |
| 23078033 | 113200-04A4 |
Bell 407 HMU Overhaul & Exchange Support
Southwest Fuel Systems supports applicable Rolls-Royce M250-C47B HMUs used in Bell 407 applications, providing overhaul, repair, testing and exchange support for operators planning scheduled HMU events or responding to unscheduled removals. The Bell 407 maintenance documentation references the M250-C47B HMU installation.
Operating a Bell 407? Send us your HMU part number, serial number and current condition for availability and quotation.
HMU Overhaul or Exchange?
Overhaul Your Unit
Send your Bell 407 HMU to Southwest for evaluation, overhaul, testing and return.
Exchange Availability
Need to minimize aircraft downtime? Ask about current Bell 407 HMU exchange availability for your applicable part number.