"Tempus fugit" is Latin for "Time flies."
The old business card of his that Mulder finds says "United States Bureau of Investigation" instead of Federal Bureau of Investigation. This deliberate error was done since making fake FBI cards (even as a TV prop) is illegal. This is the same reason that Mulder's and Scully's badges in the opening credits say "Federal Bureau of Justice, United States Department of Investigation."
It won an Emmy Award for Outstanding Sound Editing for a Series.
The name of the plane crash survivor who sat next to Max is Larold Rebhun, which is the same name as this show's scoring mixer.