Delta pilot locked himself out of the cockpit and was forced to climb through the window of the plane.
Apparently, a Delta pilot was locked out of the cockpit of a Boeing 737.
There is a numerical key pad in which pilots can input a code to enter the flight deck. But the pilots maybe forgot the code. However, the window of an aircraft can be opened from the outside to get in.
As the pilot struggles to enter head first, his co-pilot gives him a helping hand, eventually pushing him in through the window and then guiding his legs to get him fully inside.