As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING WALK AROUND IT WAS NOTED THE LEFT ENGINE OUTBOARD NACELLE STRUT DOOR WAS MISSING. THE FME DURING THE WALK AROUND NOTED THE MISSING DOOR IN THE LOG PAGE (LEFT ENGINE NACELLE DOOR MISSING). THIS WAS PLACED ON CDL ISSUED AND ISSUED AN MRN. MAINTENANCE MECHANIC RE-SECURED THE SENSOR TARGET BRAKE WITH NEW RIVETS. A/C WAS RETURN TO SERVICE.