Garrett TPE331

TPE331 / T76
TPE331-14
Type Turboprop
National origin United States
Manufacturer Garrett AiResearch
Honeywell Aerospace
First run 1960
Major applications Fairchild Swearingen Metroliner
Mitsubishi MU-2
Rockwell Turbo Commander
Number built 13,500+[1]

The Garrett TPE331 (military designation: T76) is a turboprop engine originally designed in the 1960s by Garrett AiResearch, and produced since 1999 by Honeywell Aerospace, after AlliedSignal/Garrett acquired Honeywell, keeping the Honeywell name. The TPE331 family includes 18 models and 106 configurations; the engines range from 575 to 1650 shaft horsepower.[2][3][4]

Design and development

The TPE331 originated in 1961 as a gas turbine (the "331") to power helicopters.[5] It first went into production in 1963.[6] More than 700 had been shipped by the end of 1973.[7] 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.[8]

As of July 2016, more than 13,500 TPE331 engines have been delivered, logging more than 122 million hours of flight time.[1] The 715 shp TPE331-6 used in the Beech King Air B100 have 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 with $130,000 HSI checks and $190,000 overhauls.[9]

Applications

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

Specifications

Cutaway view of a TPE-331

General characteristics

Components

Performance

See also

Comparable engines
Related lists

Note

^ These aircraft were fitted with TPE-331s as a modification to replace their original engines

References

  1. 1 2 "Honeywell Continues to Hone Turboprop Engine for 50th Anniversary" (Press release). Honeywell. July 2016.
  2. ↑ "Honeywell Aerospace TPE331 Spec Chart" Honeywell. Accessed: 29 August 2014.
  3. ↑ Archived September 8, 2010, at the Wayback Machine.
  4. ↑ "TPE331-14 Turboprop Engine" Honeywell. Accessed: 29 August 2014.
  5. ↑ William A. Schoneberger and Robert R. H. Scholl, Out of Thin Air: Garrett's First 50 Years, Phoenix: Garrett Corporation, 1985 (ISBN 0-9617029-0-7), pp. 174-5.
  6. ↑ Canadian Museum of Flight, "Garrett TPE331"
  7. ↑ Schoneberger and Scholl, p. 203.
  8. ↑ Leyes, p. 725
  9. ↑ Fred George (Jan 30, 2017). "Used Aircraft Report: Beech King Air B100". Business & Commercial Aviation. Aviation Week.
  10. 1 2 3 4 5 Canadian Museum of Flight "Garrett TPE331-43A"
  11. 1 2 3 4 5 6 "TPE331-10 Turboprop Engine" (PDF). Honeywell. April 2006.
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