Rudder Trim Control (red highlight-added) and rudder position indicator (yellow highlight-added),
NTSB
1990-07-03
Graphic image from page 24, of the <a rel="nofollow" class="external text" href="http://www.airdisaster.com/reports/ntsb/AAR90-03.pdf">NTSB Accident Report /AAR-90/03</a>