The DC-3 (Tp 79 Hugin with Air Force Number 79001) at F 8 Barkarby. Photo: Herman Allwin (kristianstadsbladet.se) [Public domain], via Wikimedia Commons Travel The spy plane that disappeared Friday, June 13, 1952, a DC-3 takes off from Bromma airport. On board are eight people on a top secret operation. The plane never returns and remains gone for over 50 years.