This gas turbine engine was designed as both a turboshaft (TSE331) and a turboprop (TPE331). The turboshaft version never went into production; however, over 14,000 TPE331s have been sold. The military version (the T76) has the air inlet above the engine unlike most commercial versions.

models

• T76-G-420: 1,040 hp (776 kW)
• TPE 331: 575 hp (429 kW)
• TPE 331-12UAR: 1,020 hp (670 kW)
• TPE 331-11U-601G: 1,100 hp (820 kW)

specifications

• Turboprop (single shaft)
• Compressor: two-stage centrifugal
• Turbine: 3-stage
• Mass flow: 5.8 to 11.6 lbs/sec

used by

• British Aerospace Jetstream
• Fairchild Metro III
• North American OV-10 Bronco
• Rockwell Turbo Commander