The pilots were fully briefed on the maneuver before they attempted to perform it in the simulator. The following three flight scenarios were flown:
(1) normal landings on runway 4 at LGA, starting from an altitude of 1,000 or 1,500 feet on approach;
(2) attempted landings at LGA or TEB after the bird strike, starting both from zero groundspeed on takeoff from runway 4 at LGA and from a preprogrammed point shortly before the bird strike and loss of engine thrust; and
(3) ditching on the Hudson River starting from 1,500 feet above the river at an airspeed of 200 kts.
... a draft script included the names of real-life NTSB officials, but Sullenberger - who is an adviser on the film - requested they be taken out.
He said, ‘These are people who are not prosecutors. They are doing a very important job, and if, for editorial purposes, we want to make it more of a prosecutorial process, it ain’t fair to them,”’ said Hanks.