Piper SEMINOLE PA-44-180, Maintenance Manual

Page: 381 / 881

PITOT AND STATIC.
The optional heated pitot head is located on the undersurface of the left wing. It is controlled by an ON/OFF
type switch labeled PITOT HEAT which is located on the switch panel to the left of the pilot. The heated pitot
head has a circuit breaker located in the circuit breaker panel and labeled PITOT HEAT. (Refer to Figure 30-16
for pitot head installation.)
WINDOWS AND WINDSHIELDS.
HEATED WINDSHIELD PANEL — OPTIONAL.
An electrically heated glass panel may be installed on the exterior side of the pilot’s windshield to provide
visibility in icing conditions. The panel draws its current from the aircraft electrical power supply and is
controlled by an ON/OFF control switch/circuit breaker located in the center of the deice system control panel.
The heated panel is hinged at its base to facilitate windshield cleaning.
REMOVAL OF HEATED WINDSHIELD PANEL.
1. Disconnect the electrical connector (located next to the heated panel on the exterior side of the windshield)
by removing the two screws and pulling the plug out of the receptacle.
2. Remove the two screws which attach the panel assembly to the windshield collar and remove the pane from
the airplane.
— Note —
If the airplane is to be flown with the heated panel removed, rotate the receptacle plate
180° and reinstall so that the holes in the fuselage skin are covered Also, reinstall the
windshield collar screws.
INSTALLATION OF HEATED WINDSHIELD PANEL.
1. Position the panel assembly on the windshield collar and secure with two screws previously removed.
2. Press the electrical plug into the receptacle and secure with two screws previously removed.
3. Perform an operational ground check by turning the heated windshield panel switch ON for a period of time
not to exceed thirty seconds. Proper operation is indicated by the glass section being warm to the touch.
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
3 0 - 4 1 - 0 2
Page 30-21
Revised: May 15, 1989
2E1
PIPER AIRCRAFT