What was found
NR 1 MLG WOULD NOT RETRACT AND LOCK DURING CLIMBOUT, ALTERNATED BETWEEN UP AND LOCKED AND TRANSIT WITH HYDRAULIC HAMMERING. ACFT RETURNED TO BLOCK, MAINTENANCE REPLACED NR 1 MLG UPLOCK BOX AND OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 1 MLG WOULD NOT RETRACT AND LOCK DURING CLIMBOUT, ALTERNATED BETWEEN UP AND LOCKED AND TRANSIT WITH HYDRAULIC HAMMERING. ACFT RETURNED TO BLOCK, MAINTENANCE REPLACED NR 1 MLG UPLOCK BOX AND OPS CHECKED GOOD.