TM 55-1510-219-MTF
RPM. Check maximum power lever position as follows:
NOTE
The only requirement of the maximum
power lever position check is to verify
that it is possible to obtain maximum
allowable gas generator RPM (N1) with
the power levers in the full forward
position. If during the test the TGT
temperature limit or N1 limit is obtained
prior to reaching maximum N1, the
check is completed.
1.
Altitude - 25,000 feet pressure altitude.
2.
Propeller levers - Set 2000 RPM.
3.
Ice vanes - Retracted.
4.
Bleed air valve switches - OPEN.
5.
Airspeed - As required.
6.
Power levers Full forward (do not exceed TGT and/or N1
limits). Maximum N 1 is 101.5%. Maximum TGT is 750°C.
*D. SPEED CHECK AT MAXIMUM CRUISE POWER.
NOTE
A new or rebuilt engine operated at the
torque value presented in the cruise
power charts will show a TGT margin
below the maximum cruise limit for the
torque value presented in the charts.
With ice vanes retracted, cruise torque
settings shown on the cruise power
charts should be obtained without
exceeding TGT limits.
Speed-power runs shall be made in smooth air to determine
consistency with performance figures. Torque settings, fuel flow, and
airspeed to be achieved will be
4-4
