TM 1-1510-223-CL
E-9
8.Light still illuminated after 30 seconds: LEFT
ENVIRO & PNEU BLEED AIR valve switch –
ON.
9.RIGHT ENVIRO & PNEU BLEED AIR valve
switch – PNEU ONLY.
10.Light still illuminated after 30 seconds:
RIGHT ENVIRO & PNEU BLEED AIR valve
switch – ON.
ENGINE ANTI-ICE FAILURE
1. ICE VANE POWER SELECT switch – STBY.
2. VANE
FAIL
annunciator
–
Check
extinguished.
ENGINE BLEED AIR SYSTEM MAL-
FUNCTION
BL AIR FAIL ANNUNCIATOR ILLUMINATED
1.
BRAKE DEICE switch – Off.
2. TGT and torque – Monitor (note readings).
3.ENVIRO & PNEU BLEED AIR valve switch
(affected side) – Off.
4. Cabin pressurization – Check.
EXCESSIVE DIFFERENTIAL PRESSURE
1.Cabin altitude and rate-of-climb controller –
Select higher setting.
If condition persists:
2.LEFT ENVIRO & PNEU BLEED AIR valve
switch – PNEU ONLY (L BL AIR OFF
annunciator illuminated).
