TM 1-1520-238-T-5
Change 4
7–133
7–45.
PRESSURIZED AIR SYSTEM – MAINTENANCE OPERATIONAL CHECK (cont)
7–45
M68-037
PITOT ICE DET AD SNSR
SWITCH
CANOPY DEFOG
SWITCH
Figure 7–56.
Pilot ANTI ICE Panel
f. On pilot ANTI ICE panel, (fig. 7–56), set
CANOPY DEFOG switch to OFF. Check
that air stops flowing from defog air mixers
(fig. 7–57).
If air does not stop flowing from defog air mixers, refer
to TM 1-1520-238-T-8 to troubleshoot pitot anti–ice
system.
PILOT STATION
M68-038
RIGHT DEFOG
AIR MIXER
LEFT DEFOG
AIR MIXER
Figure 7–57.
Defog Air Mixers
Task
Result
g. On pilot ANTI ICE panel (fig. 7–56), set
PITOT ICE DET AD SNSR switch to ON.
Check that air flows from rear of ice detector
sensor (fig. 7–58).
If air does not flow from ice detector sensor refer to
TM 1-1520-238-T-8 to troubleshoot anti–ice system.
