Could the plane have made it back to LaGuardia airport if Sullenberger, portrayed by actor Tom Hanks, had turned it around?
He said he has also been impressed since then with how Sullenberger has used his fame to promote aviation safety.
The film, scheduled for release in theaters on Friday, portrays investigators as more like prosecutors looking for any excuse to blame Sullenberger for the mishap.
Did the thrust in both engines quit after the plane struck a flock of geese or was there still some power in one?