I just saw this film last night on video (yes I know, I'm in the Dark Ages).
Anyway, couple of other questions about the ditching sequence:
1. When the aircraft ditches, Hanks isn't strapped in (is he?). Wouldn't the force of the impact have slammed him against something and bent him? Also, the last image looking out of the cockpit seemed to indicate a severe nose down attitude, although admittedly with the swell it would be hard to judge.
2. When Hanks gets out of the aircraft, and we see the outside view, the engines seem to be running. Is this reasonable? I would have thought that the water immersion would have at least stopped them from running, even if they were still turning due to momentum (then again, I know nothing about jets). Then the engine "explodes". I know that fans are tested, compressor blades broken, etc. and I believe that containment has failed in flight on occasion, but is it plausible in the partially submerged scenario? Just curious.