As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS AFTER TUNING THE BOTH NR 1 AND NR 2 HF RADIOS, AND CALLING SFO, UNABLE TO RESPOND/ANSWER CELL CALL BACK TO AIRCRAFT ATC WEAK, OR UNREADABLE. TRIED SEVERAL FREQS ON BOTH RADIOS. MAINTENANCE ACCOMPLISHED HF BITE TEST. BITE TEST PASSED IAW AMM 23-11-00. ACCOMPLISHED BOTH HF SYSTEMS. OPS CHECK NORMAL IAW AMM 23-11-00-710-801. NO 30 DAY HISTORY.