As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SATCOM 1 AND 2 RECEIVES BUT WILL NOT TRANSMIT. ATTEMPT USING HEADSET, AND HAND MICROPHONE USING BOTH YOKE PTT AND PTT ON THE COMMS PANEL. ACFT GROUNDED. PERFORMED AMM 23-15-00-730-801, OPS REPORTED WORKING FINE. NO HISTORY LAST 30 DAYS.