Navy tailback Napoleon McCallum, inactive since tearing ligaments and breaking a bone in his left ankle in the second game of the season, is working out again and his coach, Gary Tranquill, said yesterday there is a slight possibility that McCallum might play against Army Dec. 1.

But Tranquill said it is unlikely either McCallum or quarterback Bill Byrne, who broke his foot Nov. 3 against Notre Dame, would play against Army. He did not, how-ever, say the chance of either playing in the game in Philadelphia was inconceivable.

"McCallum is at practice, but he's running on his own," Tranquill said. "Right now, we are not making any plans for McCallum or Byrne. I don't see any way either will be able to play against Army, but if it happens, it happens."

McCallum, a 1983 consensus all-America who held 16 school records after his junior season, gained 191 yards on 40 carries this season before he was injured with 84 seconds remaining in a 21-9 loss to Virginia. His 2,874 career yards left him 61 short of Eddie Meyers' school record of 2,935.

McCallum had surgery the day after the injury. Dr. Tom Harries said McCallum would not return for the regular season, but estimated he could be available for some postseason all-star games.

Byrne, a sophomore, set a school record with 11 touchdown passes this season before his injury.