As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL APPROACH, A LARGE POPPING NOISE CAME FROM THE FCP PANEL. SHORTLY AFTER IT STARTED TO VENT SMOKE BETWEEN NAV AND ALT BUTTON. CREW DECLARED EMERGENCY, FOLLOWED QRH PROCEDURES, LANDED NO FURTHER INCIDENT. REMOVED AND REPLACED FCP IAW AMM 22-11-07. COMPLIED WITH ALL FUNCTIONAL CHECKS IAW 22-11-07, OPS CHECK GOOD. OK FOR SERVICE. (M)