What is the aircraft in the 'Be Altitude' album cover? In 1972, the Staple Singers released the "Be Altitude" album, which has them posing in a jet engine's intake.



My question is what aircraft does that engine belong to? And why would someone let them use it for a photo shoot?
Its a Boeing 747 courtesy of Delta Airlines as per the album credits. Photo by Gerry Griffith. For the right amount of money its not that hard to take pictures in, on, or near jets.