As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AIRCRAFT RETURNED TO MBJ DUE TO A NOSE GEAR DOOR FAULT LOTS OF NOISE - SUSPECT STUCK OPEN, DID NOT EXCEED 270 KNOTS (210 MAX). NO EMERGENCY WAS DECLARED AND THE AIRCRAFT LANDED SAFELY WITHOUT FURTHER INCIDENT. MAINTENANCE ACCOMPLISHED FIM TASK DMC -B787A-32-30-F1-05A-421A WITH NO FAULTS NOTED.