Ual747 From , joined Dec 1969, posts, RR:
Reply 1, posted (12 years 1 month 3 weeks 6 days 13 hours ago) and read 1591 times:
It's probably moved in a certain direction because of the wind. At DFW, walk by the line up of 777's at the gate, and all of their rudders will be turned to the left because of a wind coming from the South.
Bio15 From Colombia, joined Mar 2001, 1089 posts, RR: 7
Reply 2, posted (12 years 1 month 3 weeks 6 days 9 hours ago) and read 1555 times:
I would guess it has something to do with hydraulics and the actuators on the rudder fin. Probably it's because the APU powers some system and not the other. I have seen A300's sitting on the gate with only the right low-speed aileron drooped all the way down, and the other horizontal. It is just a guess, someone please correct me if I'm misataken