Power loss, Gpss missed approach function – TruTrak Sorcerer User Manual

Page 18

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condition that persists in one direction for more than a few seconds, the
three moving horizontal bars will come into view and move in the
direction in which trim is required. The trim should be adjusted to return
to a neutral trim condition. With mechanical trim this is easily done, but
with electric systems it may be necessary to develop a technique. If the
trim is slow enough, the pilot has plenty of time to react when the bars
disappear before the trim condition is reversed. With a fast trim it will be
necessary to tap or pulse the trim button so that it will be slow enough to
turn it off before going too far.

Power Loss

If there is a momentary loss of electrical power, the autopilot will

disengage. When this happens it is necessary to do a GYRO SET in
flight before re-engaging the autopilot. Fly the aircraft as straight and
level as possible while pressing and holding the knob. Continue holding
the knob for about 20 seconds. Engage the autopilot and note the
difference between the TRK and SEL values. If this is more than 15°
repeat the gyro set procedure. A value below 15° will automatically
slave away over a short time with straight flight. After landing, perform
another gyro set procedure once the aircraft is stationary, this time hold
the knob for approximately 40 seconds. This will ensure the gyros are
calibrated properly for the next flight.

GPSS Missed Approach Function

This missed approach function only works when the autopilot is

already coupled to the GPS glide slope. To initiate, press the VS UP or
DN rocker switch (either direction will work). This will start a 500 fpm
climb but the autopilot will remain in GPSS mode. At this time, the
approach can be suspended on the GPS (pressing SUSP on a
GNS430/530). The autopilot will maintain the 500 fpm climb, but will
fly the missed approach pattern.

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