Page 33 - January 2022

And by the way, I suggest not rotating the handle to the fully locked position when towing the airplane or leaving it in a secure hangar. Only move the handle to the Locked position when you plan to use your key to truly lock the door. This puts less stress and strain on the latch bolts, J-hooks and door seal ... at least I think so. Just turn it far enough – maybe 45° – to keep the door from dropping open.
6. Autofeather can only operate when (1) the switch is in Arm; (2) both power levers are well-advanced, in the range of 90% N1 or above; (3) the torque on one side is above about 400 ft-lbs or 17%; and (4) the torque on the other side is below about 200 ft-lbs or 10%.
The power setting for a two-engine ILS or LPV won’t have the power levers advanced far enough. Thus, the first step – Power! – is to double the torque on the remaining engine by pushing BOTH power levers forward. If you push only one forward, you have moved step 5, Identify, to step 1 of the “Suspected Power Loss” drill. That’s bad!
As a piece of trivia: The bottom position of the Autofeather switch – TEST – eliminates the need for BOTH power levers to be advanced. In this scenario, holding it down would cause feathering of the flamed-out engine. But you’d still need to add power on the other side sometime!
How did you do? Did I make you think? Answering all questions correctly does not mean you are necessarily a “better” pilot. However, I strongly believe that the more we understand our airplane’s systems the easier it is to become the pilots we want to be.
King Air expert Tom Clements has been flying and instructing in King Airs for over 46 years and is the author of “The King Air Book” and “The King Air Book II.” He is a Gold Seal CFI and has over 23,000 total hours with more than 15,000 in King Airs. For information on ordering his books, contact Tom direct at twcaz@msn.com. Tom is actively mentoring the instructors at King Air Academy in Phoenix.
If you have a question you’d like Tom to answer, please send it to Editor Kim Blonigen at editor@blonigen.net.
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JANUARY 2022
KING AIR MAGAZINE • 31