L BL AIR OFF annunciator - Check extinguished.
L and R BL AIR FAIL annunciators - Check
PNEUMATIC PRESSURE gage/GYRO SUCTION gage
- Check in green arc.
CABIN CLIMB indicator - Check for descent indication
within approximately 10 - 15 seconds, then release
LEFT PNEU & ENVIRO BLEED AIR valve switch - Off.
Repeat steps 9 through 14 using the right bleed air
CABIN PRESS switch - Set to pressure position
CABIN ALT controller - Reset as required.
Cabin pressurization RATE control - Reset as required.
PNEU & ENVIRO BLEED AIR valve switches (2) - ON.
RADAR mode selector switch - SBY.
LSS mode selector switch - SBY.
WX pushbutton selector switch (display controller) -
Depress. Observe that EHSI displays partial compass
The radar transmitter is radiating X band
microwave energy when in the test (TST)
RADAR mode selector switch - TST. Observe that WX
mode annunciator on EHSI remain STBY.
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
RADAR mode selector switch - SBY, then as required.