Surface and antenna deicer switches
- Release. Check boots visually to
see that they are sucked down flat
Propeller deicer- Check as follows:
Make four separate checks. Each
time momentarily move the switch to
PROP position and check propeller
ammeter normal operation (14-18
Propeller deicer switch - ON.
Propeller deicer ammeter Monitor for
two minutes. A small momentary
needle fluctuation must occur every
thirty seconds when the propeller
deicer timer is switching.
Cabin and cockpit ventilation system
Check the following items for flow of air,
binding controls, and the capability of
being shut off by its own control:
Eye ball cold air vents.
Pilot's and copilot's vents.
Windshield defroster ducts.
Main cabin air ducts.