As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REPORTS OF LOSS OF LEFT AND RIGHT TRANSPONDERS. ACCOMPLISHED ITEMS EXCEPT THE REPLACEMENT OF ATC UPPER ANTENNA, AND TDR CHECK OF COAX FROM K34101 TO ATC TOP ANTENNA M34119. CHECKS OK. RPL'D ATC UPPER ANTENNA. REF PCN 581-0023 (ANT) & 150-8413(GSKT).