Answer:
.Ambient noise (passengers, crew, equipment)
.Noisy equipment due to malfunction.
.Active conversations with passengers and colleagues.
.Information overload from displays.
.Cell phone use (talking, texting, gaming, social media use)
.Mind wandering, rumination.
.Physiological discomfort due to temperature, body positioning.
Here is a list of some options... Good Luck on your assignment! : )