Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Dulles International Airport:

"
  • On January 21, 1970, the first commercial flight of the Boeing 747 was delayed when an engine malfunction caused the aircraft in question to be temporarily grounded. Another 747, the Clipper Victor, was on standby, and flew the inaugural flight for Pan American Airways. The Clipper Victor would later be destroyed in the Tenerife airport disaster.[citation needed]