A strange situation in which a Delta Airlines pilot crawled through the window of a Boeing 737 plane was caught on camera and shared online last week.

The video, shared by the Twitter account @Aviationbrk, shows the pilot standing on a luggage conveyor belt with the co-pilot as he attempts to move through the plane’s window.

The pilot struggles to enter the plane’s window head first before the co-pilot pushes him through and guides his legs inside the cockpit.