TM 55-1510-221-MTF
NOTE
The engine acceptance at maximum cruise
power check needs to be performed only if
the TGT observed during the engine accep-
tance check at maximum continuous power
exceeds 730°C
1.
Record the following.
*a.
Engine serial number
*b.
Engine hours since new
*c. Engine hours since overhaul
2.
Altitude - Establish level flight at 25,000 feet pressure
altitude.
3.
Propeller levers - Set 1900 RPM.
4.
Adjust the opposite engine to maintain 135 KIAS.
5.
Free air temperature - Record.
6.
Set engine torque as specified by the maximum cruise
speed/engine acceptance chart (figure 6) for the recorded
indicated free air temperature, on the engine to be tested.
7.
Allow conditions to stabilize for one minute then record the
following for each engine being tested:
*a.
Airspeed
*b.
Pressure altitude
*c.
Free air temperature
*d.
Propeller RPM
*e.
Torque
*f.
N1
*g. TGT (must not exceed 730°C)
8.
Repeat for opposite engine
4-7
