As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GPWS INOP LIGHT LIGHT ON INTERMITTENT TO CONT POPPING SOUND FROM OVHD COCKPIT SPEAKER WIT H GPWS LIGHT ON REPLACED EGPWS COMPUTER, OPS CHECK GOOD. TERRAIN DATABASE 612 INSTALLED. MM 34-46-00 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1016984 SN OFF 9307 COMPUTER, EGPWC OFF 64-3446-9-0004 9307 ON 64-3446-9-0004 4573