As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE DOOR OPEN RED CAS: ON DEPARTURE AFTER GEAR SLECTED UP WE RECIEVED A " NOSE DOOR OPEN " RED CAS MESSAGE SHORTLY THERE AFTER WE GOT THE " GEAR DISAGREE " RED CAS MESSAGE. RAN THE GEAR DOOR OPEN CHECK LIST, LOWERED THE GEAR ( 3 GREEN ) AND RETURNED. REMOVED AND REPLACED WITH CUSTOMER SUPPLIED NEW NLG SELECTOR VALVE. PERFORMED 8 GEAR SWINGS WITHOUT FAULT. GAVE THE SYSTEM AN HOUR TO COOL AND PERFORMED ANOTHER 7 SWINGS WITHOUT FAULT. ALL OPS AND LEAK CHECKS GOOD AT THIS TIME. REF AMM 32-33-07.