CHAPTER 34
PAGE 9
MAINTENANCE MANUAL EXTRA 300/SC
PAGE DATE: 16. June 2008
34-20-02 Turn and Bank Indicator
Description and Operation
The turn and bank indicator indicates the turning rate of the
aircraft about its vertical axis. This instrument comprises an
electrically driven gyro, suspended in a gimbal system and
whose spin axis is parallel to the lateral axis of the aircraft.
The gimbal is connected to the bar pointer of the indicator by
a lever system. This bar pointer also indicates the rate at
which the aircraft is turning.
In addition, the front of the instrument houses a sphere
located in a globe filled with a damping fluid. The change in
this indication shows the pilot whether the aircraft is slipping.
Removal/Installation
1 Remove the indicator attachment bolts and nuts.
2 Disconnect the electrical wiring.
3 Hand the turn and bank indicator under the instrument
panel and remove.
4 Install in reverse sequence of removal.
5 Perform an operation test.
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