Page 22 - Volume 13 Number 8

A T-wheel (turbine wheel) installed in a guide vane, inside the burner can. These are the infamous CT blades that cost up to $1,900 each, and there are 58 of them.
they were years ago. Nevertheless, since they take the brunt of the wear and tear inside the engine, they develop problems that must be addressed. Prepare for sticker shock as $40­$50,000 is not unusual.
All guide vanes have a class expressed as a numerical designat­ ion. The class indicates how the guide vane flows. Replacement guide vanes, whether exchange or new, must be the same class, or the engine will not perform correctly. I cannot emphasize to you how critical it is that the engine shop correctly determine the class of vane being removed and replace it with the exact same class.
PT Guide Vanes
Power turbine guide vanes do not take as much abuse as their CT counterparts, but they still can crack or warp. Although lo­ cated in the power section, they are inspected at the HSI. If they
TSO High Altitude FAA Approved Mask
with comfort fit headgear
King Air Replacement Mask Carbon Fiber
Phone (800) 237-6902 www.aerox.com
20 • KING AIR MAGAZINE
AUGUST 2019