Avcon Industries has received FAA STC approval for its dual 400-amp starter-generator special mission power system installation for Beechcraft King Airs equipped with Pratt & Whitney Canada PT6A-67A turboprop engines. As STC'd, the installation provides a total generator capacity of 800 amps, which is more than the factory standard starter-generators, according to the Newton, Kansas-based subsidiary of Butler National.

A user-customizable power distribution system with 400 amps of power from two dedicated electrical buses is featured in the modification that is intended to optimize special mission operations. The modification “significantly increases the capabilities in light of the continuing demand for power for the evolving electronic intelligence, surveillance, and reconnaissance (ISR) systems,” said Avcon director of sales Aric Peters. “We continue to maximize the use of the corporate King Air 350 to develop cost-effective and market-niche products.”

Peters added that Avcon—which specializes in complex structural modifications and system integrations for business aircraft and aircraft used for ISR, forestry and atmospheric research, and air ambulance—plans to pursue King Airs equipped with the PT6A-60A for its next 400-amp modification.