As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR ACTUATOR FOUND LEAKING DURING PREFLIGHT. MAINTENANCE DISASSEMBLED AND FOUND A GROOVE AROUND THE PISTON ROD (P/N 1280241-2) WHERE THE 'O'RING AND BACKUP RINGS RIDE. REPLACED PISTON ROD ASSEMBLY, INSTALLED NEW SEALS. RE-RIGGED GEAR AND RELEASED A/C.