Factual error: Whenever the fire extinguisher is activated for a jet engine, that engine becomes inoperable. In the movie, the co-pilot first activates the extinguisher for the left engine, and 30 seconds later, for the right engine. At that point, both engines should be shut down. However, the engines are still operating (and revving up) and Whitaker even asks Margaret to apply full power, which is also audible. (00:23:00)
Factual error: When flight 227 departs Orlando, the thrust increases for 3 minutes. It should have increased for 30 seconds.
Factual error: During the emergency, Whip instructs Ken to dump fuel, and fuel is seen spraying out of the nozzle on the wing. MD-80 family aircraft are not equipped with fuel dump capabilities.
Factual error: During the pre-flight scene, in the exterior shot panning from the control tower down to the aircraft parked at the gate, the sign on the jetway indicates gate A27, when there is in fact no such gate at Orlando International Airport.
Factual error: When Denzel checks his iphone, the lock screen shows a date of October 20 and the time is 1:17. After unlocking the screen, the calendar icon on the phone shows the 8th as the date, and the time as 8:52. The battery remaining also changes.
Factual error: When Whip finishes his walk-around, he meets his First Officer and asks: "have we met before?" or something like that. In the real life, you meet your crew in the crew room, give them a thorough briefing, so when you go to an airplane, you already know the people you're going to work with. That's the place you introduce yourself, not the flight deck. It's impossible to meet your FO on the flight deck, without having met him first in the briefing room.
Suggested correction: When I was a regional Captain, I almost never went to the crew room as it was out of the way. I almost always met my FOs at the plane for the six years that I was there. It's even worse during reserves as you may fly with several different FOs, or FAs in the same day. I now work cargo, and it doesn't happen as much, but occasionally still happens if, for example, timed out or became fatigued. They would bring a fresh crew member out to me.
Factual error: When the plane's altitude decreases from 28,000 to 27,000 ft on the altimeter, the digits to the right of the 8/7 do not change.