As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: HIGH FREQUENCY COMMUNICATION SYSTEM INOPERATIVE. FLIGHT DIVERTED TO JFK, LANDING SAFELY. MAINTENANCE REPLACED HF COUPLER M23102 (AALA202303298362) AND HF COUPLER M23202 (AALA202303299561) PER AMM 23-11-03. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.