Bel Air's Steve Henson intercepted two Aberdeen passes, one from Faulcon and one from replacement quarterback Nicholas Wynn.
The victory improved Aberdeen's record to 5-2. Bel Air is 2-5.
NORTH HARFORD beats HAVRE DE GRACE
North Harford scored 21 points in each half and beat visiting Havre de Grace, 42-13, in a Chesapeake (upper) Division game.
The Warriors struck first on Lavell McCullers' 77-yard strike to Chris Askew for the game's lone first quarter points.
North Harford scored three unanswered touchdowns in the second quarter for a 21-6 half time lead. Quarterback Ryan Stinar passed 48 yards to Brady Maguire before North Harford scored on two short touchdown runs. Nick Warren ran one yard and Jon Hammer ran four yards. Chris King added the extra-point kicks after all three scores.
The Hawks (3-0, 6-1) also scored three straight touchdowns, all on the ground, in the third quarter. Warren had the longest on a 37-yard run. Tyler Campbell added the other two on runs of eight and five yards. King kicked one of two extra points and Campbell also had a run for a two-point conversion.
Havre de Grace (2-2, 4-3) scored in the final quarter when McCullers threw 14 yards to Askew again.
HARFORD TECH gets first win
Harford Tech won its first game of the season, beating host North East, 8-0, in a Susquehanna (lower) Division game. The game's only points came on a 53-yard touchdown run by quarterback Austin Nierwinski. Nierwinski then passed to Zac Taylor for the two-point conversion to put Cobras (1-3,1-6) in the win column.
JOPPATOWNE shuts out CMW
Joppatowne (1-3, 4-3) snapped a three-game skid with a 20-0 win over visiting C. Milton Wright (0-3, 2-5) in Chesapeake play.
Jamil Lee highlighted the win, rushing for 175 yards, two touchdowns and a two-point conversion on 25 carries.
Mariners quarterback John Pace was 2-for-2 for 30 yards.
Khalil Jones led the defense with eight tackles and Dylan Nicodemus added seven.
David Moore and Kashawn Graham had interceptions for Joppatowne.
FALLSTON improves to 7-1
The Fallston Cougars improved to 7-0 with a 41-0 drubbing of visiting Lansdowne.
Marc Badger rushed for a pair of touchdowns to lead the way for Fallston's offense. Chris Rose caught one touchdown pass, while Ryan Umpleby and Steve Hill each scored one touchdown in the victory.