CTR From United States of America, joined Jul 2005, 303 posts, RR: 0
Reply 1, posted (8 years 7 months 2 weeks 1 day 19 hours ago) and read 4147 times:
On early C-17s the pitch trim actuators could be operated either by a switch or by a cable that ran from the cockpits all the way to the tail. Later birds got rid of the cable. Trim is automatic but over ride-able for emergency operation.