TM 1-1510-224-CL
10.
L BL AIR OFF annunciator - Check extinguished.
11.
L and R BL AIR FAIL annunciators - Check
extinguished.
12.
PNEUMATIC PRESSURE gage/GYRO SUCTION gage
- Check in green arc.
13.
CABIN CLIMB indicator - Check for descent indication
within approximately 10 - 15 seconds, then release
TEST switch.
14.
LEFT PNEU & ENVIRO BLEED AIR valve switch - Off.
15.
Repeat steps 9 through 14 using the right bleed air
valve.
16.
CABIN PRESS switch - Set to pressure position
(center).
17.
CABIN ALT controller - Reset as required.
18.
Cabin pressurization RATE control - Reset as required.
19.
PNEU & ENVIRO BLEED AIR valve switches (2) - ON.
WEATHER RADAR
1.
RADAR mode selector switch - SBY.
2.
LSS mode selector switch - SBY.
3.
WX pushbutton selector switch (display controller) -
Depress. Observe that EHSI displays partial compass
heading arc.
WARNING
The radar transmitter is radiating X band
microwave energy when in the test (TST)
mode.
4.
RADAR mode selector switch - TST. Observe that WX
mode annunciator on EHSI remain STBY.
5.
Range switches (radar control panel) - Depress both
switches simultaneously. Observe that WX mode
annunciator on EHSI changes from STBY to TEST, and
that magenta, red, yellow, and green are displayed. A
green noise band will appear at the upper arc range
marking.
6.
RADAR mode selector switch - SBY, then as required.
P-17
