The Prime Time Access Rule (PTAR) was a broadcasting regulation that was instituted in the United States by the Federal Communications Commission (FCC) in 1970 to restrict the amount of network programming that a local television station either owned-and-operated or affiliated with a television network can air during "prime time". This rule was repealed by the FCC in 1996.
A 1975 revision to the PTAR allowed networks to program the 7:00 p.m./6:00 p.m. time slot on Sundays, and all of the major networks have done so ever since. ABC has programmed America's Funniest Home Videos in the slot for much of the time since 1993 (except for a period from 1997 to 2002, when ABC broadcast The Wonderful World of Disney in the 7:00 p.m. hour), while CBS has shown 60 Minutes in the slot consistently since 1975. NBC has mostly broadcast Dateline NBC in the slot since 1996, though since regaining NFL broadcasting rights in 2006, during football season the network airs Football Night in America in the slot as a pre-game show to its NBC Sunday Night Football broadcasts.
The proposed revision of the PTAR was discussed in the early of 1974. One of the six shows included was The Love Nest, We'll Get By, Sunshine, Second Start, Where's the Fire? and Everything Money Can't Buy.
In June 18th, 1974, it never had a one-year stay on implantation of the revised PTAR, it chose a half-stay on implantation of the revised PTAR instead of September 1974, it was introduced in January of 1975. The shows was however started mid-season.
On the November of 1974, CBS was negotiating to cancel Gunsmoke due to rural outcome and very poor ratings and also negotiating to cancel The CBS Thursday Night Movie due to very weak ratings. CBS however wanted to introduce midseason projects by television producers (such as Quinn Martin, MTM, Norman Lear, MGM, Lorimar), some of them were spin-offs of its productions made by its producers, some of them were 1974-released telemovie spinoffs, NBC introduced midseason projects (some of them were variety shows) was introduced, some of them were television show spinoffs of NBC-aired telemovies released in 1974, and ABC introduced midseason projects, some of them were spin-offs of its aired TV shows, some of them were TV show spinoffs of movies introduced in the Movie of the Week.
Fully ITTL, on IOTL terms, on June 18th 1974, it had a one-year stay on the implantation of the revised PTAR, and it chose to debut on September 1975, most of the spin-offs of telemovies and its spinoffs of TV shows never happened (except for CBS' The Jeffersons and ABC's S.W.A.T.) and cancellations of two shows delayed (Gunsmoke to March 1975 and The CBS Thursday Night Movie to November 1975).