Chicago, Illinois - PRELIM INFO FROM FAA OPS CHICAGO IL UAS INCIDENT 2101C ATLANTIC SOUTHEAST 4750 E145 PILOT

PRELIM INFO FROM FAA OPS: CHICAGO, IL/UAS INCIDENT/2101C/ ATLANTIC SOUTHEAST 4750, E145, PILOT OBSERVED A UAS WHILE AT 1,700 FEET DEPARTING ORD ON RUNWAY 9R HEADING NORTHEAST BOUND.