What was found
(CAN) TRANSPONDER NR 1 MODE S TRANSPONDER GENERATING THE CAS MESSAGE : TRANSPONDER 1 FAIL. RESETTING THE CIRCUIT BREAKER CLEARS THE MESSAGE BUT THEN AFTER CYCLING THE POWER FROM EITHER BATTERY OR GENERATORS OR GPU RESETS THE MESSAGE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) TRANSPONDER NR 1 MODE S TRANSPONDER GENERATING THE CAS MESSAGE : TRANSPONDER 1 FAIL. RESETTING THE CIRCUIT BREAKER CLEARS THE MESSAGE BUT THEN AFTER CYCLING THE POWER FROM EITHER BATTERY OR GENERATORS OR GPU RESETS THE MESSAGE.