Probably very similar:
Northwest 705 air crash
It appeared that the aircraft did not break up until the crew apparently tried to recover when passing through 10,000ft. The question then was what caused the aircraft to get into such an unusual condition. The answer came in the fact that the aircraft has an inherit tendency to 'weathervane' into gusts. So, when the initial updraft caught the aircraft, it would have an initial tendency to nose down into the gust. This apparently prompted Almquist to give nose-up inputs, which would actually worsen the overall situation. The same effect worked in the downdraft which followed. It is also important to note that, although it appears full up elevator was used in the recovery attempt, full nose-down trim was still wound in from the prior encounter with the updraft.
Regards,
GCGB