Garmin GFC 500 Maintenance Manual page 38

9.3.2.2 Manual Electric Pitch Trim Speed Check
1. Manually adjust pitch trim fully against either mechanical stop.
2. Actuate the TRIM switch on the pilot's flight controls until the trim runs against the other
mechanical stop while monitoring the run time.
3. Verify that the elapsed time for full travel of the pitch trim is within the range specified on
the appropriate model-specific installation manual addendum (190-02291-XX). If the
elapsed time is not within the specified range, refer to Section 5.2 in this manual.
4. Repeat the test in the opposite direction.
GFC 500 Autopilot with ESP Part 23 AML STC Maintenance Manual
190-02291-01
Page 31
Revision 1