Flight 7K9268 lurched up and down several times in the final moments before it lost contact with the ground, according to data from the Flight Radar 24 tracking site.
The Airbus 321 climbed nearly 3,000 feet in three seconds before falling another 3,000 feet a few seconds later, the altitude data shows. It repeated the abrupt rise and fall a second time before it was lost to radar.
The records from the Sweden-based Flight Radar 24 also show the aircraft rapidly losing speed in its last minute. This data is usually very reliable, but can sometimes be affected by an erroneous message.
Good grief, what would cause that? Up, down, up, down?
A struggle for control of plane? It just seems an odd thing.