What was found
DURING FLIGHT, NR 2 HF RADIO WOULD NOT TRANSMIT. CREW NOTED THAT OPERATIONAL CHECK OF SELCAL WAS NORMAL. AIRCRAFT LANDED IN HNL WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 2 HF COUPLER IAW AMM 23-11-61. MAINTENANCE PERFORMED AN OPERATIONAL CHECK OF NR 2 HF RADIO. AIRCRAFT WAS RETURNED TO SERVICE. THE FOLLOWING CREW PERFORMED A FLIGHT VERIFICATION FOR THE NR 2 HF SYSTEM. SYSTEM CHECK WAS FOUND NORMAL AND NOTED BY MAINTENANCE.