MD82 FO RUDDER PEDALS NOT LOCKED IN PLACE ON TKOF ROLL RESULTING IN ABORTED TKOF.

Narrative

AFTER COMPLETING ALL CHKLIST; CAPT ALIGNED ACFT WITH RWY AND COPLT BEGAN TKOF ROLL AT ABOUT 60 KTS FO STATED HE HAD NO RUDDER STEERING AND NO BRAKES. THROTTLES WERE BROUGHT TO IDLE AND CAPT CTLED ROLL TO NEXT TXWY. TWR OFFERED A 180 DEG ON RWY TO BACK TAXI. FO THEN REALIZED RUDDER PEDALS ADJUSTMENT KNOB HAD NOT RETRACTED INTO PLACE PROPERLY. AFTER RESETTING; ALL CTLS WERE NORMAL; WE ACCEPTED ANOTHER TKOF AND DID NOT RETURN TO GATE. FLT WAS NORMAL AND ALL CAPT'S CTLS WERE NORMAL. FO RECHKED CTLS FROM FO SIDE OF COCKPIT. ALL WERE NORMAL DURING BACK-TAXI AND TKOF. SUPPLEMENTAL INFO FROM ACN 296980: PROCEDURAL CHKLIST CALLS FOR THE CAPT TO CHK THE RUDDERS AND FO TO CHK AILERON AND ELEVATOR CTLS PRIOR TO TKOF. WE DID THAT. HOWEVER IN MAKING A ROLLING TKOF I WAS NOT AWARE MY RUDDER PEDALS WERE NOT FUNCTIONING UNTIL THE BEGINNING OF THE TKOF ROLL. THEY MOVED IN AND OUT BUT PROVIDED NO RUDDER MOVEMENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE FO RECOGNIZED THE LACK OF CTL AFTER HE TOOK OVER AT APPROX 60 KTS AT WHICH TIME THE TKOF WAS ABORTED. THE RUDDER PEDALS VOLUNTARILY REENGAGED SOON AFTER ABORT. THE PUSH/PULL KNOB HAD NOT SLIPPED BACK INTO ANY DETENT TO LOCK THE RUDDER PEDALS IN PLACE. THE RUDDER PEDALS ARE SPRING- LOADED TO THE FULL EXTENDED OR OUT POS BUT THEN HAVE TO BE PUSHED AND HELD IN ANOTHER POS UNTIL THEY ARE LOCKED BY THE PUSHING IN THE KNOB! HE FURTHER STATED THAT WHEN HE DISCUSSED THIS MATTER WITH COMPANY OPERATIONAL CTL; IT WAS INDICATED THAT THIS HAS HAPPENED ON SEVERAL OCCASIONS. HE STATED THAT THE CHKLIST HAS NOT BEEN CHANGED TO INCLUDE A FO RUDDER CHK. THE MAIN EMPHASIS HAS BEEN TOWARD KEEPING THE FO OFF THE RUDDER PEDALS DURING THE CAPT'S CHK IN ORDER TO PREVENT PHYSICAL INJURY TO THE FO'S SHINS. HOWEVER; HE BELIEVES THAT IT WOULD BE HELPFUL AFTER THIS INCIDENT TO INCLUDE A RUDDER CHK BY THE FO SINCE IT MAY BE NOT ONLY NECESSARY FOR THE FO TO HAVE CTL FOR HIS ACFT CTL BUT TO BE ABLE TO BACKUP THE CAPT IN CASE OF THE CAPT LOOSING CTL OR NEEDING ASSISTANCE ON THE BRAKES OR RUDDER.