As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 DRIVE LIGHT OFF DURING PREFLIGHT. NO INDICATIONS OF OIL LEAKAGE NOTED. OIL LEVEL FULL. DPI NOT EXTENDED. PERFORMED GCU1 BITE REF 24 21 00. NO FAULTS LOGGED. DISCONNECTED CONN. DP1206 FROM NR 1 IDG REF WDM 24 11 11. NR 1 DRIVE LIGHT WENT OFF. RECONNECTED DP1206 NR 1 DRIVE LIGHT CAME BACK ON. OPS TEST NORMAL REF AMM TASK 24 11 00.