El Cajon Police were sent to investigate a dead body discovered at Gillespie Field Saturday and find out how the person died.
Deputies inside a San Diego County Sheriff's helicopter spotted the body 5:45 p.m.
NBC 7 crews on the scene say the deceased person was lying partially under the propeller of a plane in a hangar.
Officials later confirmed that a 93-year-old man had died from natural causes while working on his plane.
