Test Bench    Fuel Pump Bench    Prop Gov Bench

National Flight Services' component repair and overhaul facility is the only Honeywell Authorized TPE331 LRU repair shop in the world. We repair, overhaul, or exchange TPE331 LRUs for most of the TPE331 engine repair shops around the globe. We are constantly expanding our equipment, capabilities and services to better meet our customers' needs.

Our experienced technicians work side-by-side with our engineering staff to develop and maintain cost efficient, long lasting repairs and modifications.


Download our brochure for more information.


National Flight has extensive experience on the following:

  • Fuel Controls
  • Fuel Pumps
  • Fuel Shut-off Valves
  • Oil to Fuel Heater/Cooler
  • Turbine Scavenge Pumps
  • Anti-Ice Valves
  • Start Pressure Regulators
  • Planetary Gears
  • High Speed Pinions
  • Oil Pressure Regulators
  • Prop Governors
  • Prop Pitch Controls
  • Solenoid Valves
  • Inlet Temperature Sensors
  • Feather Valve Assemblies
  • Flow Dividers
  • Torque Sensors
  • Sun and Bull Gears
  • Oil Vent Valves
  • Torque Load Assemblies

We test Beta Switches, NTS Switches and perform Involute testing. We also test all high pressure oil components. If you don't see something listed, call us and we will help you out!


Component Repair Facility

1640 Commerce Rd.
Holland, OH 43528

Toll Free: 1 (800) 669-2704
Local: (419) 866-5953
Fax: (419) 867-4223