Boeing 737-800 - Probe Heat Panel

737 Flight Crew Operations Manual
Anti-Ice, Rain -
Controls and Indicators
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 3.10.3
Probe Heat Panel
YK981 - YK993
YK994 - YW274
1 Probe Heat Lights
Illuminated (amber) – related probe not heated.
Note: If operating on standby power, probe heat lights do not indicate system
status.
YK981 - YK993
2 PROBE HEAT Switches
ON – power is supplied to heat related system.
OFF – power off.
YK994 - YW274
2 PROBE HEAT Switches
ON – power is supplied to heat related system.
CAPT
TEMP
PITOT
VANE
R ALPHA
PITOT
R ELEV
PITOT
PITOT
F/O
HEAT
B
PROBE
A
ON
OFF
VANE
L ALPHA
PROBE
PITOT
L ELEV
AUX
TAT TEST
FORWARD OVERHEAD PANEL
1
2
3
CAPT
TEMP
PITOT
VANE
R ALPHA
PITOT
R ELEV
PITOT
PITOT
F/O
HEAT
B
PROBE
A
ON
AUTO
VANE
L ALPHA
PROBE
PITOT
L ELEV
AUX
TAT TEST
FORWARD OVERHEAD PANEL
1
2
3
September 15, 2016