A float switch in the reservoir illuminates the
ALC AI annunciator when the tank is empty.
The light stays on even if the switch is off as
a reminder to service the reservoir.
When the RADOME position is selected, a
fully serviced reservoir supplies only the
radome with alcohol for approximately two
hours and nine minutes. When positioned to
WSHLD & RADOME, alcohol is also dis-
pensed to the pilot’s defog outlet via the three-
way valve, and duration of the supply is re-
duced to approximately 45 minutes.
NOTE
This system is still operational if
both emergency pressurization valves
are in emergency (provided DC
power is available).
10-10
FOR TRAINING PURPOSES ONLY
Figure 10-12. Alcohol System—SNs 24-181 through 24-349 and 25-025 through 25-226 and
Airplanes Modified for Known Icing Conditions
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