As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SAT LOG MODEM STATUS PAGE IN ACARS DISPLAYS LBT-2 AS NOT READY AND SIGNAL STRENGTH 0. GROUNDED - YES. ON SAT CONFIG PAGE. LBT-2 SIM NUMBER WAS BLANK. RESEATED IRIDIUM CONFIG ID MODULE SIM CARDS PER AMM 23-15-00-400-802. ONE MIG-51A INSTALLED/ REMOVED. LBT-2 SIM NUMBER NOW SHOWS AND LBT-2 SHOWS READY ON SAT LOG PAGE.