Levg79 From United States of America, joined Sep 2003, 1004 posts, RR: 0 Posted (11 years 3 months 3 weeks 3 days 10 hours ago) and read 5801 times:
It's either I'm doing something wrong or somebody could explain a way out of my situation. As soon as I disconnect the autopilot, the airplane is immediately pitching up. How can I avoid it? For example, as soon as I'm ready for a touch down, I turn the autopilot off to land the airplane and it's pitching up rapidly causing a crash. Why is that? Any ideas would be appreciated.
A mile of runway takes you to the world. A mile of highway takes you a mile.
Zak From Greenland, joined Sep 2003, 1993 posts, RR: 8
Reply 2, posted (11 years 3 months 3 weeks 3 days 9 hours ago) and read 5775 times:
" As soon as I disconnect the autopilot, the airplane is immediately pitching up."
the autopilot uses trim for pitch control. in various high alpha situations for example when slow with flaps out and gear down, you will have a massive pitch trim by the auto pilot, usually visible on the panel and, on modern models, from the outside. try correcting the trim in pause. it will not occur then