ICE AND RAIN PROTECTION
Operation
Aircraft Operations Manual
11.2
PAGE
4
Jun 01/19
CONDITIONS
NORMAL PROCEDURES
(Cont’d)
If icing conditions have been encountered during flight
−
If operationally feasible, avoid use of reverse thrust below 50 KIAS.
2.3
WING AND
STABILIZER
DE
−
ICE
OPERATION
The Boot De
−
icing must be used
As defined for operation of wing and stabilizer
de
−
icing boots ( see page 2), or upon annunciation from an ice detector system (if
installed), whichever occurs first except:
−
During take
−
off, until reaching 400 feet above threshold elevation, use boots
only at first sign of ice anywhere on the aircraft.
−
If SAT is below
−
40
_
C, use boots only if ice is observed accumulating on any
part of the aircraft.
System check
1.
Power Levers
Ground Idle
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
HP BLD VALVE switch (one only)
AUTO
. . . . . . . . . . . . . . . . .
3.
AIR SUPPLY switch
CHECK ON
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
BOOT IND switch
ON
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−
Set BOOT IND switch to ON for boot indication lights to work during test.
5.
AUTO CYCLING switch
ONE CYCLE
. . . . . . . . . . . . . . . . . . . . . . . . .
−
Set AUTO CYCLING switch momentarily to the
ONE CYCLE position and release it to OFF.
−
Observe boot indication lights to come on one at a time
(for approximately 6 seconds) in the following order:
STAB
−
W OUTB
−
W INB
−
STAB.
6.
Caution lights
CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−
Check DE
−
ICE OV TEMP and TIMER caution lights to be off.
7.
HP BLD VALVE switch
AS REQUIRED
. . . . . . . . . . . . . . . . . . . . . . . . . .
In flight, when wing and stabilizer de
−
icing required
HP bleed may be required for operation of the boot de
−
ice system at high alti-
tudes and/or low power settings. An increase or decrease in power may be
required.
With Mod No 2310 installed HP Bleed will be automatically provided when PL is
below 64
(min Takeoff position) and the boots are cycling provided the HP valves
are in AUTO position.
NOTE
(Cont’d)