Blackhawk acquires STCs for King Air 90 engine upgrades

Blackhawk has acquired Silverhawk Conversions’ Supplemental Type Certificates (STCs) for the King Air C90/A series and E90 engine upgrades. The STCs allow replacement of legacy engines in C90, C90A, and E90 aircraft with new PT6A-135A engines or used PT6A-135 engines.

Blackhawk offers a range of engine upgrade programs for King Air, Caravan, Cheyenne and Conquest aircraft and is the world’s largest non-OEM buyer of new Pratt & Whitney (P&W) turboprop engines, company officials said.

“Although we already own a similar STC, this strategic acquisition is an important step in maintaining our position as the number one provider of engine upgrades for the turboprop fleet and is in line with our vision of continued growth in the market,” said Blackhawk CEO Jim Allmon.

After providing credits for time remaining on existing engines, Blackhawk exchanges them for factory-new P&W PT6A-135As. The upgraded King Air 90s realize increased true airspeed and improved single-engine performance, while enjoying a significantly lower time to climb and reduced operating and maintenance costs, company officials said.

Blackhawk, founded in 1999 in Waco, Texas, has upgraded more than 350 aircraft. The company has the world’s largest installed fleet of STC twin-engine turboprop engine upgrades. For more information:


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