As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN PERFORMING T/O WARNING CHECK PRIOR TO T/O THE AUTOBRAKES AURAL WARNING SOUNDED AND COULD NOT BE SILENCED. T/S AND FOUND ROLLER MISSING FROM SPEEDBRAKE CTRL LEVER ARMING SWITCH PACK ON PEDESTAL. REMOVED AND REPLACED SAME PER M/M. PERF ADJ TEST PER M/M FUNCT CK OK. PERF DFGC RTS 1-2 BOTH PASS OK. AUTOSPOILER SYST CKS OK.