As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF FLIGHT CREW HEARD PERMANENT BELL AURAL WARNING WITHOUT AN ASSOCIATED EICAS WARNING. WARNING COULD NOT BE CANCELLED. THE AIRCRAFT RETURNED TO THE GATE AND MAINTENANCE CONFIRMED FAULT. THE AURAL WARNING CARDS WERE INTERCHANGED IN ACCORDANCE WITH THE AMM 31-51-04 PB 401 AND THE WARNING DSAPPEARED. THE COOLING HOSE WAS ALSO FOUND TWISTED AND SAME WAS UNTWISTED AND SECURED. THE AIRCRAFT WAS SUBSEQUENTLY RETURNED TO SERVICE. NOTE: COMPONENT TOTAL TIME IS UNKNOWN