Extra 300/SC - Page 193

CHAPTER 27
PAGE 27
MAINTENANCE MANUAL EXTRA 300/SC
PAGE DATE: 1. August 2014
5 If necessary adjust the length of the middle tail control rod
per Chapter 27-00-01.
6 Check if the elevator travel is within the given tolerances
(up/down 25°, ±1°). Use a conventional protractor.
7 Adjust the travel stops if necessary.
8 Check if the control stick travel is symmetrically.
9 If it is not, contact the manufacturer.
27-30-02 Trim Tab
Removal/Installation
1 Loosen bowden cables. If a replacement is necessary order
new cable.
2 Disconnect the safety cotter pins and remove the hinge pins.
3 Install in reverse sequence of removal.
Rigging
Refer to Figure 20.
1 Secure the control stick in normal position as per Figure
19.
2 Position trim to the neutral position using the trim switch
and the LED-display on the instrument panel.
3 Check trim lever deviates 1° clockwise from the vertical.
4 Remove and adjust trim servo rod if necessary (default
measurement is 198 mm). Reinstall with new cotter pins.
5 Check trim tab is in neutral position.
6 Adjust trim tab using the linkage bolt if necessary.
7 Bring the trim tab in extreme positions using the trim switch
and check if trim tab travel is ±32° (tolerance ±2°). If it is
not, check free travel of the trim levers, fuselage bellcrank
and bowden cables.