TM 1-1520-240-MTF
2-30
BEFORE STARTING ENGINES (CONT.)
11. Systems
instruments
Check
engine,
transmission, torque, rotor, hydraulics systems,
and airspeed indicators for static indications
slippage marks, orientation, and operating
range markings. Refer to Table 2-1.
B* 12. XMSN OIL PRESS SCAN.
B* 13. XMSN OIL TEMP switch SCAN.
14. Flight instruments Check indications and set
as follows:
a. Turn and slip indicators Check race full of
fluid, needle and ball centered. Alignment
between indicators.
b. Airspeed indicators Compare indicator
readings.
c. Vertical
velocity
indicators
Note
indications.
d. HSI Check as follows:
(1) Four flags present RANGE, HDG, NAV,
GS.
(2) Heading knob Rotate 360 degrees
checking for smooth operation.
(3) Course knob Rotate 360 degrees
then 90 degrees opposite direction
stopping at a cardinal heading. Check
for smooth operation and that the
course heading and number in the
window are within 1 degree of each
other.