6 September 1956
St. Louis Post-Dispatch (St. Louis, MO)
Sat, Sep. 08, 1956, page 11
Killed In Helicopter Crash
DAYTON, OH, Sept. 7 (AP) -- Capt. Robert I. Quillen of Dayton, an Air Force pilot was killed yesterday when the Sikorsky-built helicopter he was operating crashed and burned near a runway at the Wright Air Development Center.
Air Force officials said the main rotor may have became detached from the helicopter. They added that helicopter crashes are "extremely rare".