TM 55-1510-220-CL
(10).
If the light Is still Illuminated after 30 seconds: Right
bleed air valve switch - OPEN.
ICE VANE FAILURE
1.
Airspeed - 160 KIAS or below.
(2).
Ice vane control circuit breaker - Pull.
3.
Ice vane - Operate manually.
4.
Airspeed - Resume normal airspeed.
BLEED AIR SYSTEM FAILURE
Bleed Air Failure Light Illuminated
(1).
Brake deice switch - OFF.
(2).
TGT and torque - Monitor (note readings).
(3).
Bleed air valve switch - PNEU & ENVIRO OFF.
(4).
Cabin pressurization - Check.
Excessive Differential Pressure
(1).
Cabin altitude and rate-of-climb controller. Select
higher setting.
(2).
If condition persists LEFT BLEED AIR VALVE switch -
ENVIRO OFF (light illuminated).
(3).
If condition still persists RIGHT BLEED AIR VALVE
switch - ENVIRO OFF (light Illuminated).
4.
If condition still persists - Descend Immediately.
(5).
If unable to descend CABIN PRESS DUMP switch -
CABIN PRESS DUMP.
(6).
Bleed air valve switches - OPEN, If cabin heating is
required.
E-8
