TM 1-1510-225-CL
P-10
3. Electrical standby system – Check.
ANTI-ICE/DEICE SYSTEMS – CHECK
1. PROP deice – Check. When MANUAL mode is
selected, note rise on DC loadmeter. When
AUTO mode is selected, monitor prop ammeter
for 90 seconds and ensure the indicator remains
in the normal operating range the entire time.
NOTE
If windshield heat is needed prior to takeoff,
use NORMAL setting for a minimum of
15 minutes prior to selecting HIGH to provide
adequate preheating and minimize the
effects of thermal shock. The windshield
heat thermostat will invalidate the check in
OAT above 20 to 30 ° C.
2. WSHLD ANTI-ICE – Check. Note increases on
the loadmeter and cycle through both normal and
high settings.
3. All anti-ice/deice switches – OFF
4. Surface deice system – Check.
VACUUM AND PNEUMATIC SYSTEM
1. LEFT BLEED AIR VALVE – OFF.
a. Pneumatic and suction pressures remain
normal.
b. L BL AIR OFF annunciator illuminates.
c. Both BL AIR FAIL annunciators remain
extinguished.
2. RIGHT BLEED AIR VALVE – OFF.
a. Pneumatic and suction pressures read zero.
