It was originally a military part made in 1959 completely from scratch. It was the first Honeywell Aerospace Turboprop Engine, but the series has now expanded to 18 different engine models with 106 different configurations. Their engines have completed a total of 122 million flight hours combined with their 13,000 engine that have been sold since they opened. It remains one of the most reliable engines today. Few aircraft or engines can say they have been at the top of the market for as long as the Garrett/ Honeywell TPE331.
In 1964 the Garrett AiResearch TPE331 took its first trip on a fixed-wing aircraft in April. Specifically, the Beech C-45 which was a military aircraft. In the same year, it was named the fastest turboprop airplane engine of its time and was first recognized by the FAA in 1965. The T76, a military version of the TPE331, was heavily used during the Vietnam War and became the turning point for Garrett AiResearch engines. Back in 1985, there was a merger with Honeywell Aerospace, resulting in the engines becoming a Honeywell part. In the U.K. these engines are still used by the Royal Air Force, and for military training.
Today these engines are still being used to boost power and performance of their aircrafts. Honeywell plans to re-engine planes with these TPE331 engines allowing them to have a longer lifespan. The TPE331-12B will be used as the backbone of India’s new military training. Honeywell Aerospace is in contact with manufacturers around the world to ensure that the TPE331 is continuously meeting their needs and remaining reliable for everyone.
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