TM 1-1510-225-CL
P-7
c. Maximum
time
for
1.a.
and
1.b.
is
15 seconds.
2. ICE VANES – RETRACT.
a. Both advisory lights extinguish.
b. Both bypass doors retracted.
c. Maximum
time
for
2.a.
and
2.b.
is
15 seconds.
ANTI-ICE/DEICE SYSTEMS
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.
2. WSHLD ANTI-ICE – Check. Note increases on
the loadmeter and cycle through both normal and
high settings.
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.
3. All Anti-Ice/Deice switches – OFF.
4. Surface Deice System – Check.
