TD 15

Question 1

Engine Compressor Stall

Answer 1

Engine compressor stall may be characterized by a sharp rumble or a series of loud sharp reports, severe engine vibration and a rapid rise in TURB OUT TEMP. Should engine compressor stall occur:

Collective- REDUCE
Engine Anti-ice and Heater switches- OFF
Land as soon as POSSIBLE

Question 2

Fuel Quantity indicator

Answer 2

R = on empty

Question 3

Turbine Outlet Temperature (TOT) Limits

Answer 3

CAUTION

Exceeding the limits of 810*C TOT or 100% torque may cause N1 topping with resultant rotor droop.

Question 4

Power Turbine (N2) indicator

Answer 4

R = 97% Minimum Operation

G = 97-100% Continuous Operation

R = 100% Maximum

N2 75%-88%, 60 seconds Maximum (time not cumulative)

Question 5

Engine RPM Limits

Answer 5

WARNING
Use of the throttle to control RPM is not authorized. (Refer to Chapter 9, Emergency Procedures and the USAAWC Flight Training Guide for exceptions.)

Question 6

N2 Overspeed Chart

Answer 6

From 0 to 32% torque, engine RPM may be between 100 and 107%. From 32 to 100% torque, the engine rpm decreases linearly from 107 to 103%.

“N2 transient overspeed limit is 15 seconds Maximum. Shaded area represents allowable overspeed.”