Honeywell TPE331

The Honeywell TPE331 (military designation: T76) is a turboprop engine. It was designed in the 1950s by Garrett AiResearch and has been produced since 1999 by its successor, Honeywell Aerospace. The engine's power output ranges from .

Design and development Garrett AiResearch began developing the TPE331 in 1959 for the military. "Designed as a 575-horsepower engine it was not a scaled-down version of a larger engine, as competitors were offering." The TPE331 originated in 1961 as a gas turbine (the "331") to power helicopters. It first went into production in 1963. By the end of 1973, more than 700 units had been shipped. It was designed to be both a turboshaft (TSE331) and a turboprop (TPE331), but the turboshaft version never went into production. The first engine was produced in 1963, installed on the Aero Commander in 1964, and put into production on the Aero Commander Turbo Commander in June 1965.

Performance

The 715 shp TPE331-6 used in the Beechcraft King Air B100 has a 400-hr fuel nozzle cleaning interval, 1,800-hr hot section inspection interval, and a 5,400-hr time between overhaul; approval is possible for 3,000-hr HSIs and 6,000-hr overhauls, and engine reserves are cheaper than for the PT6A.

Variants

Military variants (T76)

T76-G-2 T76-G-4 T76-G-6 T76-G-8 T76-G-10 T76-G-12 T76-G-12A T76-G-14 T76-G-16 T76-G-410 T76-G-411 T76-G-416 T76-G-417 T76-G-418 T76-G-419 T76-G-420 T76-G-421

Commercial variants (TPE331) + US FAA Variants Model Certified TPE331-1 1967-12 TPE331-1U TPE331-1UA TPE331-2 1967-12 TPE331-2U TPE331-2UA TPE331-3 1969-03-28 TPE331-3U 1969-03-28 TPE331-3UW 1969-03-28 TPE331-3W 1969-03-28 TPE331-5 1970-05-15 TPE331-5A 1988-05-04 TPE331-5AB 1992-07-21 TPE331-5B 1992-07-21 TPE331-5U 1970-05-15 TPE331-6 1970-05-15 TPE331-6A 1978-01-20 TPE331-6U 1970-05-15 TPE331-8 1976-11-19 TPE331-8A 1981-12-24 TPE331-9 1976-11-19 TPE331-9U 1976-11-19 TPE331-10 1978-01-20 TPE331-10A 1980-12-12 TPE331-10AV 1996-07-19 TPE331-10B 1980-12-12 TPE331-10G 1984-08-14 TPE331-10GP 1994-12-14 TPE331-10GR 1984-08-14 TPE331-10GT 1994-12-14 TPE331-10J 1988-05-04 TPE331-10N 1992-02-06 TPE331-10P 1994-12-14 TPE331-10R 1982-06-25 TPE331-10T 1994-04-14 TPE331-10U 1978-01-20 TPE331-10UA 1982-07-29 TPE331-10UF 1982-06-25 TPE331-10UG 1984-08-14 TPE331-10UGR 1984-08-14 TPE331-10UJ 1988-05-04 TPE331-10UK 1988-11-04 TPE331-10UR 1983-11-14 TPE331-11U 1979-09-28 TPE331-11UA 1982-06-25 TPE331-12 1984-12-19 TPE331-12B 1986-12-10 TPE331-12JR 1997-10-31 TPE331-12UA 1988-05-04 TPE331-12UAN 2014-05-09 TPE331-12UAR 1987-12-18 TPE331-12UER 1991-07-22 TPE331-12UHR 1993-01-07 TSE331-3U 1970-04-30 TPE331-14A 1984-04-26 TPE331-14B 1984-04-26 TPE331-14F 1989-05-24 TPE331-14GR 1992-07-13 TPE331-14HR 1992-07-13 TPE331-15AW 1988-12-05 TPE331-16 N/A TPE331-25A TPE331-25AA TPE331-25AB TPE331-25B TPE331-25C TPE331-25D TPE331-25DA TPE331-25DB TPE331-25E TPE331-25F TPE331-25FA TPE331-29A TPE331-43 TPE331-43-A TPE331-43-B TPE331-45 TPE331-47 TPE331-47-A TPE331-47-B TPE331-51 TPE331-55 TPE331-55-A TPE331-55-B TPE331-57 TPE331-57-B TPE331-61 TPE331-61-A

Applications

Fitted with TPE-331s as a replacement for their original engines

Specifications

Honeywell TPE331

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