Pan American World Airways Monday June 28, 1965
Just after the aircraft took off from San Francisco International Airport, the No. 4 engine disintegrated tearing off 25 feet of the right wing. An emergency landing was safely made at Travis Air Force Base. A plane was dispatched to pick up the passengers at Travis Air Force Base. While attempting to land, and in plain view of the passengers, the nose gear collapsed. Improper turbine rotor positioning during engine assembly and the use of serviceable worn parts. The aircraft was named "Clipper Friendship."