AAL A-300 accident
Flight Safety,
NTSB report excerpt,
"These lateral forces corresponded in time with rudder movements. The NTSB continues to investigate the cause of the rudder movements."
These lateral forces were induced by the rotating vortices striking the aircraft structure, and the vertical stabilizer surface area, broadside. The resulting lateral motion streamlined the free floating rudder, (Disconnected or broken rudder actuator linkages from reversng .3G and .4G forces on the rudder.) inline with the direction of lateral motion.
Surely you do not believe the co-pilot, or any other pilot would kick the rudder back and forth rapidly, as recorded.
Addenda.
NTSB report excerpt,
"The FDR indicates that flight 587 encountered two wake vortices generated by JAL flight 47." Negative!
Flight 587 actually encountered first the left side of the left rotating vortex from the B-747 and then the right side, which explains the opposite direction wind shear strikes.
Fraternally,
wsherif1
Last edited by wsherif1; 27th February 2004 at 04:16.