Corrected entry: Before flight 069 of NWA airlines is about to take off, the pilot tells his co-pilot to secure the cockpit cabin. The co-pilot locks 8-10 different locks on the cockpit door, similar to all the different locks you'd see on an apartment door in a bad neighborhood. A few scenes later, the owner of the airline walks right into the cockpit - none of the locks are still secured.
Corrected entry: In the courtroom scene, Kevin Hart is involved in a civil lawsuit. A jury reads a verdict, but juries are not used in American civil trials, only criminal trials.
Correction: Actually, juries are used in both. It is up to the plaintiff to decide whether he wants a bench (judge) or jury trial.
Corrected entry: When the plane is about to take off from LAX, the thrust levers are pulled back which activates thrust reversers used for landing.
Correction: Thrust reversers aren't activated unless the pilot also pulls back separate levers on the back of the thrust levers.
Correction: The co-pilot locks the cabin before take off. Nashawn Wade (Kevin Hart) doesn't enter the cockpit until after takeoff, allowing enough time for the doors to be unlocked off screen.