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Good God, making a second circle to land approach is a ghastly error.
But its previous flight fro Kazan to Moscow reports some vibration prior to
Several minutes later ATC cleared the 737 to descend to 10,000 feet and 3 minutes later requested they descend to 8,500 feet. When the aircraft reported "airport in sight" they were instructed to maintain 8,500 feet until on base leg, then they were cleared for a visual approach to runway 35, and to contact the Tower on 119.9Mhz. On final the Captain was flying the aircraft, the first officer was handling communications, the runway was in sight, the aircraft was configured, and the checklist was complete. The aircraft was turning from its 45° intercept to the extended runway centerline, and the first officer called "we're at 1,000 feet."
On a Feb. 25, 1991, flight, N999UA's rudder deflected inexplicably to the right. The problem went away when the pilots switched off the yaw damper, a device that automatically commands small rudder adjustments during flight. Mechanics replaced a part called the yaw-damper coupler and returned the plane to service.
Two days later, a different flight crew reported N999UA's rudder again moving to the right. The new coupler evidently had made no difference. This time mechanics replaced a valve in the yaw damper and returned the plane to service.
Four days later, on the blustery morning of March 3, 1991, Captain Harold Green and First Officer Patricia Eidson were bringing N999UA down for a routine landing in Colorado Springs. At 1,000 feet, the jet suddenly flipped to the right and dived straight down, smashing into a city park and killing all 25 on board..
The NTSB, in early-2001, cited a rudder system malfunction, leading to a loss of rudder command by the crew, as the primary probable cause of this accident.
How about a bump for our well thought out informative discussion! flags help!
reply to post by Bigburgh
The rudder reversals all happened on the first use of the rudder after descending from cruising altitude. They were caused by hot hydraulic fluid hitting a frozen PCU.
reply to post by smurfy
The flashes seen in the video were the strobe lights on the wingtips.
reply to post by smurfy
The lights that can be seen in the video appear to match up perfectly to an intact, powered 737. If a wing, or a portion of the wing had come off, or any control surface for that matter, what was seen in the video would have looked differently. But based on my experience, even on a grainy video, that looks like an intact aircraft.