PITOT, STATIC, AND ANGLE-
OF-ATTACK VANE ANTI-ICE
SYSTEM
Pitot and Angle-of-Attack Vane
Anti-icing
Each pitot head is heated with a cockpit-
controlled electrical heating element to pre-
vent moisture from freezing and obstructing
the heads (Figure 10A-11). The PITOT HEAT
switch for each pitot tube is located on the
switch panel. Two drain valves (except on
SNs 23-003 through 24-137) for draining any
condensation prior to flight are located on
the lower skin adjacent to the nose wheel
well. The angle-of-attack vanes are heated
whenever the PITOT HEAT switches are
turned on.
Static Port Heating
The five static ports on SNs 23-003 through
24-137 are unheated unless SK 23/24-226 has
been completed. If SK 23/24-226 has been
completed, the two forward ports on each side
of the nose are heated anytime the battery
switch is turned on. The third and rearmost
static port on the right side is not heated. It
does, however, have an alternate source inside
the nose compartment.
NOTE
On airplanes with a Century III wing,
the shoulder static ports are heated.
NOTE
SNs 23-003 through -069 not modi-
fied by SK 23/24-226 do not have
shoulder static ports.
10A-11
FOR TRAINING PURPOSES ONLY
To Next Page
Loading...
