As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4915 - CREW REPORTED THAT AFTER F/O WENT TO ASA FREQUENCY A-25 C/B POPPED. THE F/O LIGHTS EXTINGUISHED AND SMOKE WAS OBSERVED. CREW DECLARED AN EMERGENCY AND LANDED SAFELY IN TXK. MAINTENANCE REPLACED THE F/O AUDIO CONTROL PANEL. OPERATIONAL CHECKS WERE GOOD. AIRCRAFT RETURNED TO SERVICE. (M)