As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3706 - UPON GEAR RETRACTION LEFT MAIN GEAR CYCLED BETWEEN LOCKED AND UNLOCKED POSITION APPROX 9 TIMES WITH LOUD BANGING NOISE ASSOCIATED WITH EACH CYCLED BEFORE LOCKING UP. REMOVED AND REPLACED UPLOCK BOX IAW MM 32-31-00 GEAR RETRACTION AND MEASUREMENT CHECKED GOOD OK FOR RETURN TO SERVICE. (M)