Boeing 737 - WINDOW OVERHEAT; WING ANTI-ICE VALVE OPEN

737 Operations Manual
Non-Normal Checklists -
Anti-Ice, Rain
Copyright © The Boeing Company. See title page for details.
NNC.3.2 D6-27370-400E-TBCE
WINDOW OVERHEAT
Condition: A window OVERHEAT light illuminated indicates an
overheat condition has been detected.
WINDOW HEAT SWITCH (affected window) . . . . . . . . . . . OFF
[Extinguishes the OVERHEAT light and resets the system.]
After 2-5 minutes:
WINDOW HEAT SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . .ON
If the window OVERHEAT light re-illuminates:
WINDOW HEAT SWITCH. . . . . . . . . . . . . . . . . . . . . . . . . OFF
Limit airspeed to 250 knots maximum below 10,000
feet.
WINDSHIELD AIR CONTROLS . . . . . . . . . . . . . . . . . . .PULL
[Vents conditioned air to the inside of the windshield for defogging.]
WING ANTI-ICE VALVE OPEN
Condition: A WING ANTI-ICE L VALVE OPEN and/or R VALVE
OPEN light remaining illuminated bright blue in flight
indicates the related wing anti-ice valve position
disagrees with the wing anti-ice switch position.
Valve Open:
If total air temperature is above 10°C or no visible
moisture:
ISOLATION VALVE SWITCH. . . . . . . . . . . . . . . . . CLOSE
PACK SWITCH (affected side) . . . . . . . . . . . . . . . . . .OFF
[Causes operating pack to regulate to high flow in flight with flaps
up.]
ENGINE BLEED AIR SWITCH (affected side). . . . . . OFF
Valve Closed:
Avoid icing conditions.
June 08, 2001