Factual error: In a scene, when the airplane passes the Manhattan skyline, you may well see in the middle of the skyline the "432 Park Avenue Building" built between 2013-2015, but the movie is set in 2009.
Factual error: When Sully approaches the airport vendor for a sandwich we see a souvenir orange New York license plate reading "Times Sq." New York didn't introduce the new orange plates until April 2010.
Factual error: The movie showed the FAA HQ building. Then the next shot showed the NTSB Public Hearing Room. The NTSB is actually located around the corner in DC from the FAA. They are not in the same building.
Factual error: In the flight deck scenes, one of the engine parameters displayed is "EPR." This applies only to A320s with IAE V2500 engines. The "Miracle on the Hudson" A320 had CFM56 engines, so the parameter should have read "N1."
Factual error: The NTSB was portrayed horribly in this movie. They investigate purely on facts, not going on witch hunts like this movie implies. In the movie they tried to "second guess" and "blame the pilot." This never happens in real life.
While Katie Couric is interviewing Sully, the first shot shows her with a portfolio in her hand and she is not wearing a ring on her left hand. The camera goes to Sully, then back to Katie and suddenly there is a ring on her left hand.