As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDIS 729 32-30 3847 01MAR19 MEM FACT U LOGPAGES:3072768 AFTER T/O LEFT MAIN GEAR WOULD NOT RETRACT. COMPLIED W/ ECAM & QRH, LOWERED GEAR, AND RTB TO MEM. FACT 01MAR19 22:55 MEM CHECKED PSEU NO FAULTS IN HISTORY AND BITE CHECKS GOOD. SWUNG GEAR IN BOTH SYSTEMS AND GEAR SWING WAS GOOD. CHECKED GEAR RESTRICTORS FOUND BOTH CLEAN AND IN GOOD CONDITION. R&R LT MAIN GEAR SEQUENCE VALVE REF MM 32-31-37-04. LEAK CHECKS GOOD SWUNG GEAR 2 TIMES IN EACH SYSTEM GEAR SWING CHECKS GOOD ALL INDICATION CHECKS GOOD.