What was found
UNABLE TO CONNECT TO DISPATCH VIA SATCOM 1 OR 2, CDU SHOWS DIALING AND ANSWERED BUT NO VOICE CONTACT. ACFT GROUNDED, ON DEFERRAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UNABLE TO CONNECT TO DISPATCH VIA SATCOM 1 OR 2, CDU SHOWS DIALING AND ANSWERED BUT NO VOICE CONTACT. ACFT GROUNDED, ON DEFERRAL.