The Blackhawk Group Awaits Pending STC Approval for Hartzell 5-Blade Composite Propeller Paired with XP67A Engine+ Upgrade on King Air 350
The Blackhawk Group officially submits all flight test data to the Federal Aviation Administration (FAA) and is awaiting supplemental type certificate (STC) approval for the highly anticipated integration of Hartzell Propeller’s advanced 5-blade composite propeller with Blackhawk’s powerful XP67A Engine+ upgrade for King Air 350 aircraft. The milestone STC unlocks a transformative performance package that delivers speed, efficiency and operational value.