TELEVISION - Feb. 27, 1993

The Final ‘Leap’?NBC’s low-rated, science-fiction drama “Quantum Leap,” praised by critics for its social conscience and kept on the air by a core of loyal fans, may soon be leaping from network television for good. Creator Don Bellisario is preparing to shoot the season’s final episode with two endings--one to be used in case NBC cancels the series, which ranks 81 out of 127 prime-time TV shows this season. In the episode, which will probably air in May, Sam Beckett, played by Scott Bakula, “leaps” into his own body in a bar, tended by a barkeeper who may or may not be God.