A Delta flight bound for Amsterdam returned to Minneapolis-St. Paul International Airport shortly after takeoff on Sunday.

Investigators believe habitual behaviour resulted in a De Havilland Dash 8-400 crew's mis-setting take-off flaps during a ...

Although following standard pre-flight checks and crosschecks, the crew of a Dash 8 did not identify that the wrong flap ...

and during conditions of maximum engine power — such as during take-off — flaps on the side of the engine cowling could be opened to admit additional cooling airflow. These indicator dials ...