Engine Acceptance at Maximum Cruise Power (C-12F)

TM 55-1510-218-MTF

7. Repeat for opposite engine.

*G. Engine Acceptance at Maximum Cruise Power

(C-12F).

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 780C.

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 attitude.

3. Propeller levers - Set 1900 RPM.

4. Adjust the opposite engine to maintain 175

KIAS.

5. Free air temperature - Record.

6. Set engine torque as specified by the engine ac-

ceptance graph (figure 15) for the recorded indi-

cated free air temperature. on the engine to be

tested.

7. Allow conditions to stabilize for one minute

then record the following for each engine be-

ing tested:

*a. Airspeed

*b. Pressure altitude

*c. Free air temperature

*d. TGT (must not exceed 780C)

4-8