Blackhawk Aerospace has received FAA Supplemental Type Certificate (STC) approval for its XR Upgrade Kit for King Air 350 series aircraft. Along with replacing the original engines and propellers with Pratt & Whitney Canada PT6A-67A engines and MT five-bladed composite propellers, the XR kit includes new heavy-weight landing gear, high flotation tires, fully enclosed landing gear doors, a maritime rudder and the True Blue Power TB44 lithium-ion battery. The upgrade is aimed at government, military and special mission operators.
This is a companion discussion topic for the original entry at https://www.avweb.com/ownership/aircraft-upgrades/blackhawk-launches-xr-upgrade-kit-for-king-air-350s