What was found
ETOPS-DUE TO BOTH HF RADIOS UNABLE TO ESTABLISH COM WITH ATC. SWAPPED COUPLERS FOR TROUBLESHOOTING, LT SYS OPS CHECK OK, IAW AMM 23-11-01. R & R RT HF TRANSCEIVER IAW AMM 23-11-03. OPS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ETOPS-DUE TO BOTH HF RADIOS UNABLE TO ESTABLISH COM WITH ATC. SWAPPED COUPLERS FOR TROUBLESHOOTING, LT SYS OPS CHECK OK, IAW AMM 23-11-01. R & R RT HF TRANSCEIVER IAW AMM 23-11-03. OPS GOOD.