King Air Pilot

King Air Tips, Techniques and Travel Blog

What’s the difference between a Pratt&Whitney -61 and -52 engine?

Written By: Doug Carmody - Jun• 24•15

The -61 and -52 are identical engines with one exception. The max ITT on the -52 is higher than the -61 by 20 degrees (820 vs 800). This gives the ability for setting more aggressive power settings, realizing slightly better higher altitude climb and cruise performance with the -52. Also, if the customer’s airplane is equipped with any avionics package including Pro Line 21 avionics, the -52 can be installed. The -61 is good for all avionics except Pro Line 21.

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