george writes:

More than possible that the poster had a middle ear infection.

I don't see the connection between a middle-ear infection and what he saw or
believed.

Not having instruments and the training to use them while back among
the self loading cargo how could any-one tell what the aircraft was
doing?

One can estimate visually, but with limited visibility this is difficult.
Even pilots cannot depend on visual cues alone, which is why they have
instruments.

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