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.
https://www.youtube.com/watch?v=L5QuTROKwZg
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.
