Steve Bartkowski threw three touchdown passes, two to Alfred Jackson, and William Andrews set a club record for rushing attempts today as the Atlanta Falcons defeated the Detroit Lions, 30-14.

Billy Sims, the all-pro running back for Detroit (1-2), broke his right hand after carrying the ball only twice. Sims, who was 28 today, said he could be out for as long as three to six weeks. But a team spokesman said the hand was put in a partial cast and there was no word yet on how long Sims would be unable to play.

Bartkowski, successful on eight of Atlanta's first nine third downs, completed scoring passes of 54 and 36 yards to Jackson sandwiched around an 11-yard touchdown pass to tight end Ben Young as the Falcons improved to 2-1.

"Our coverage was non-existent," Detroit Coach Monte Clark said. "Our tackling was horrible . . ."

Andrews set a team rushing record with 32 carries and gained 150 yards. Bartkowski, who completed all but four of 21 passes for 249 yards in the first half and 20 of his first 25, had 366 yards passing on 24 completions in 34 attempts.

Atlanta's one-back offense helped it outgain Detroit, 535 yards to 280.