As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER CAS MESSAGE FOR THE RT ENGINE FIRE DETECTION FAILED ILLUMINATED 15 MINUTES INTO FLIGHT. RAN ENGS & ATTEMPTED TO DUPLICATE SQUAWK. NO FAIL LIGHT PRESENT AFTER EXTENSIVE RUNS & TAXIING. REPLACED THE RT FIRE DETECTION CIRCUIT BREAKER & THE CUSTOM VO BOARD IN MAU 4. COMPLETED EPIC EFIS ADJUSTMENT TEST & EPIC OPS TEST AFTER REPLACEMENT OF BOARD. ALL WORK DONE IAW MM 24-60-20, 34-17-00 & 34-23-10. ENG RUNS CHECKED GOOD.