As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL ENROUTE FOR SET N1 THRUST AT 80 KTS AND HEARD REPETITIVE "RETARD" OVER THE LOUD SPEAKER; REJECTED TAKEOFF AND RETURNED TO GATE. MAX SPEED INDICATED WAS 87 KTS. MAINTENANCE REVIEWED POST FLIGHT REPORT THAT INDICATED AIRCRAFT WENT FROM PHASE 2 TO PHASE 8 AND NEVER LEFT THE GROUND. RAN GROUND SCAN OF CENTRAL WARNING SYSTEM IAW AMM, AND PERFORMED AN OPERATIONAL TEST OF FLIGHT WARNING COMPUTER IAW AMM. NO FAILURE MESSAGES WERE NOTED.