As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LEFT WING LANDING LIGHT WAS REPLACED IN ORD DUE TO BEING INOPERATIVE. UPON ARRIVAL IN MSP, THE LEFT WING LANDING LIGHT BULB (PARTIAL) AND RETAINER RING WAS DISCOVERED TO HAVE DEPARTED THE AIRCRAFT WHILE IN FLIGHT BETWEEN ORD AND MSP. MAINTENANCE IN MSP REPLACED THE LEFT LANDING LIGHT BULB AND RETAINER RING PER B717 AMM 33-41. OPERATIONAL CHECK WAS GOOD. (LP #5288604)