Simple answer: He ran out of altitude, airspeed and ideas all at the same time.
From Andrea Shea King:
“This came to from a Lockheed employee who has had 3 assignments to Saudi Arabia. Worth the read!
During the pilot transition program with the KV-107 and C-130 with Lockheed, we found that most Saudi pilot trainees had very limited night vision, even on the brightest of moonlit nights. Their training retention rate was minimal including maintenance personnel.
Some had dim memories and had to be constantly reminded of things that were told to them the day before. An American, British or any other western instructor is burned out pretty quick. It actually took Muslim C-130 pilots years before they could fly in the dark safely and then would be reluctant to leave the lights of a city. Ask any Marine, Air Force or Army guy who’s been trying to train Iraqis, and especially Afghans.”
https://www.facebook.com/andrea.sheaking/posts/10152760202472280:0