Pre-emptions Since 1978
The program has rarely been pre-empted since 1978. Two notable pre-emptions occurred in 1976 and 1977, to make room for the annual telecast of The Wizard of Oz, which had recently returned to CBS after having been shown on NBC for eight years. However, CBS would, in later years, schedule the film so that it would no longer pre-empt 60 Minutes. Another exception is anytime CBS airs the Super Bowl or since 2003, alternating years where the AFC Championship Game has the 6:30 pm Eastern start time, which is played into prime-time and followed by a special lead-out program.
Read more about this topic: 60 Minutes, Broadcast History, Effects From The Prime Time Access Rule