As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN DUE TO HF RIGHT DID NOT TRANSMIT AND SAT DATALINK FAILED ON T/O, DATALINK LOST EICAS CAUTION MESSAGE.(<P><SPAN>PERFORMED </SPAN><SPAN>HF RADIO OPS TEST IAW FIM 23-11 F/T 804 AND AMM 23-11-00. HF RADIO TEST GOOD WAS ABLE TO TRANSMIT AND RECEIVE TO SFO GROUND 8.843. FOR DATA LINK, </SPAN>PERFORMED OPS CHECK IAW ASG AMM 23-25-00. OPS NORMAL NO DEFECTS NOTED AT THIS TIME.<BR /></P>)