WAKE TURB ENCOUNTER AT PIT; PA.

Narrative

WE (A DO328) WERE #2 FOR TKOF; RWY 28L; INTXN P AT PIT; BEHIND AN A320. AS SOON AS THE A320 STARTED ROLLING; PIT TWR CLRED US FOR TKOF (NOT POS AND HOLD). AS WE ENTERED THE RWY FROM TXWY P; MY CAPT COMMENTED ON HOW QUICKLY THE A320 HAD ROTATED; APPROX 1/2 WAY DOWN THE RWY. AS WE LINED UP ON THE RWY CTRLINE; WE DISCUSSED ROTATING PRIOR TO THE A320'S POINT OF ROTATION IN ORDER TO AVOID HIS WAKE. WE WERE HVY THAT DAY; OUR V4 SPD WAS 123 KTS. ONCE WE ACHIEVED A POSITIVE RATE AND RETRACTED THE GEAR; WE FLEW INTO THE A320'S WAKE AT APPROX 125 FT AGL. THE WAKE CAUSED AN ABRUPT L WING DOWN AND TURBULENT SIT. I IMMEDIATELY CORRECTED; AND BEGAN A L TURN FROM THE RWY TO FURTHER AVOID BEING BEHIND THE A320'S FLT PATH. LESSONS LEARNED: WE DID A GOOD JOB OF NOTING WHERE THE AIRBUS ROTATED; AND MAKING A PLAN TO AVOID ITS WAKE. WHAT WE SHOULD HAVE DONE WAS TO WAIT PRIOR TO TAKING OFF. AT THE POINT AT WHICH THIS INCIDENT OCCURRED; WE HAD WORKED 2; 12 1/2 HR DUTY DAYS; AND WERE AT 10 HRS 20 MINS ON OCT/WED/00; AND HAD FLOWN 20.7 HRS SO FAR; IN 3 DAYS OF 4 ON OUR TRIP.