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.

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