As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - IN THE DESCENT AT 270KTS, THE MAIN GEAR DOORS CYCLED. WE SLOWED TO 18KTS AND THE GEAR CONTINUED TO CYCLE SEVERAL MORE TIMES. WE PERFORMED THE ALTERNATE GEAR EXT LANDING UNEVENTFUL. C/W AMM TASK 05-50-31-210-810 EXCEPT PARA 4D NO DEFECTS NOTED. PSEU SHOWED NGDRCL, NGRD1, NGRD2, RGDRCL AND LGDRCL UNREASONABLE FAR. RESET ALT EXTENSION. FERRIED AIRCRAFT TO PDX FOR REPAIRS. REMOVED AND REPLACED MLG SELECTOR VALVE AND LANDING GEAR CONTROL PANEL. FUNCTIONAL CHECK OF PRIMARY RETRACT AND EXTENSION SYSTEM CHECKS GOOD.