As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF #1 RECEIVES BUT DOES NOT SEEN TO TRANSMIT RELIABLY HAD TO TRANSMIT IN #2 SEVERAL TIMES TO COMMUNICATE. GROUNDED - YES. REMOVED AND REPLACED HF #1 TRANSCEIVER PER AMM 23-11-21. REMOVED TAG AND RESET 1 EA C/B FOR HF #1 SYSTEM. PERFORMED GOOD OPS TEST OF HF #1 TRANSCEIVER PER AMM 23-11-21-400-801. PERFORMED GOOD SYSTEM TEST BY CONTACTING OTHER A/C IN AREA PER AMM 23-11-00-730-801.