Honeywell, the manufacturer
of the T53 series engines, estimates that the T53 series
engine has operated safely and reliably for over 70,000,000
Many authorities believe this
to be the most reliable helicopter turbine engine ever
developed. The original equipment T53-L-13B at 1400
horsepower, while extremely reliable, has proven to
be underpowered at high elevations and hot temperatures.
The upgraded T53-L-703 at 1800
horsepower, solves this problem.
The additional 400 horsepower
provides the needed power at high altitudes yet still
maintains the extraordinary reliability of the proven
T53 engine in the Bell UH-1H Plus.