Complex sentence: In Fall 1995, WICZ announced that it would be dropping its NBC affiliation and switching to Fox with the official affiliation switchover taking place on April 4,1996 when its NBC affiliation contract ran out.
Split into simpler sentences: In Fall 1995, WICZ announced it would be dropping its NBC affiliation and switch to Fox. The official affiliation switchover took place April 4,1996 after its NBC affiliation contract ran out.