AN A320 CREW; UPON LNDG AT DEN; EXPERIENCED A PITCH-UP WHEN THE AUTOBRAKES WERE DISENGAGED.

Narrative

ON APCH TO DEN WE MADE AN UNEVENTFUL APCH TO RWY 16. WE HAD ELECTED TO DO A COUPLED APCH WITH AUTOTHROTTLES ENGAGED AS FORECAST WAS POSSIBLE LLWS AND GUSTY CONDITIONS. WE WERE ON APCH WITH RWY IN SIGHT AND WINDS WERE CONSISTENT WITH SURFACE WINDS ABOUT 230 DEGS AT 18 KTS. AT APPROX 1200 FT AGL I ELECTED TO DISCONNECT AUTOPLT AND HAND FLY REMAINDER OF APCH. AUTOTHROTTLES WERE DISCONNECTED AT THE RETARD COMMAND AND ACFT TOUCHED DOWN NORMALLY. AUTOBRAKES WERE SET AT MEDIUM AND ACTIVATED. SUDDENLY ACFT PITCHED UP AT ABOUT A NORMAL ROTATION RATE AND FLOATED AIRBORNE A FEW FT. I RECOVERED THE ACFT AND MADE ANOTHER TOUCHDOWN. REST OF LNDG WAS UNEVENTFUL AND ACFT WAS TAXIED TO THE GATE. ON THE LNDG I DISCONNECTED AUTOBRAKES EARLY TO PRECLUDE HAVING HOT BRAKES. WE BLOCKED IN AT THE GATE AND NORMAL PARKING COMPLETED. NO ONE ONBOARD THE ACFT MADE ANY COMMENTS ABOUT HEARING ANYTHING UNUSUAL. SUPPLEMENTAL INFO FROM ACN 552189: AUTOTHROTTLES WERE ENGAGED UNTIL THE RETARD CALL WHEN THEY WERE DISCONNECTED AND PULLED TO IDLE. ALL 3 WHEELS WERE FIRMLY ON THE RWY AND THE AUTOBRAKES ACTIVATED NORMALLY. THE BRAKES WERE KICKED OFF TO AVOID A HOT BRAKE CONDITION; AND THE NOSE ROTATED UP. THE JET LIFTED FROM THE RWY SMOOTHLY IN A NOSE HIGH ATTITUDE. IT WAS FLOWN BACK TO THE RWY AND STOPPED NORMALLY. THE AUTOPLT WAS KICKED OFF AT ABOUT 1200 AGL AND HAND FLOWN BUT THE AUTOTHROTTLES REMAINED ON AS STATED.