Page 22 - January 2022

ASK THE EXPERT
Are You Up T for a Challenge?
by Tom Clements
his month’s article will cause you to put on your thinking caps and consider some King Air systems questions that you probably haven’t seen or heard before. I am going to present six questions to have you ponder for as long as you need, then I will provide my answers ... the correct ones, I hope! Good luck ... and have fun!
1. The Py line – the air-filled tube connecting the Fuel Control Unit (mounted on the aft accessory case) to the Fuel Topping Governor (mounted on the nose case) – becomes entirely blocked. This renders the Fuel Topping Governor (FTG) totally inoperative. (The over-torque limiter also, for the 200-series.)
A. What effect will this have on your next normal flight?
B. How would you discover that the FTG is inoperative?
2. You are preparing to enter visible moisture during steady-state cruise flight with an IOAT of -20°C so you turn on Engine Anti-Ice (extend the ice vanes). Will propeller blade angle (A) Remain the same; (B) Decrease, go to finer pitch; or (C) Increase, go to coarser pitch?
3. After turning on Engine Anti-Ice as in the above question, what have you done to your fuel efficiency? Has Specific Range – the distance traveled while consuming 1 pound of fuel, expressed in units of nm/lb and calculated by dividing ground speed by
20 • KING AIR MAGAZINE
JANUARY 2022