Are they making the Beechcraft King Air F90 again? That’s the question David and Shawn Edgington hope to inspire when you see N721RF/serial number LA-190 sitting on the ramp. A gleaming paint scheme with a playful color palette, BLR Aerospace five-bladed Whisper Props, American Aviation’s Pitot Cowling System and Aerodynamic Speed Stacks – the airplane…