As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: TACAS FAILED ON TAKEOFF AND CLIMB WOULD NOT RESET. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT MIA. REMOVED AND REPLACED TCAS COMPUTER. PER AMM 34-45-01. OPERATIONAL CHECK GOOD.