What was found
FLT#1621, LHR-BOS. (ETOPS) 'CIDS CLASS II ( CLASS II MX MSG DISPLAYED - CIDS ); REMOVED AND REPLACED CIDS 2 PER AMM 23-73-34 OPS CHECK OKAY NO FAULTS NOTED MX-4 UPDATED PLACARD REMOVED MCC NOTIFIED.'
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT#1621, LHR-BOS. (ETOPS) 'CIDS CLASS II ( CLASS II MX MSG DISPLAYED - CIDS ); REMOVED AND REPLACED CIDS 2 PER AMM 23-73-34 OPS CHECK OKAY NO FAULTS NOTED MX-4 UPDATED PLACARD REMOVED MCC NOTIFIED.'