SKYWATCH INCIDENT REPORT PRIMARY CODE: OTHER Date: 07:55 02/10/2019 Callsign: ASA428 Origin: LAX Status: Closed Aircraft: B739, BOEING, 737-900 Destination: POD: DEN Tail Number: New Destination: SEA Reporting Facility: ZSE Operator: ASA Operator Type: Paged: NO REMARKS PIC reported a UFO while S bound at FL350. UFO had a white flashing light, slow moving, estimated at FL400 - FL500 NE bound. Lat/Long: 42:47N 121:42W. ZSE CPC observed a primary target in the vicinity showing 20 knots. WADS advised. SKYWATCH INCIDENT REPORT | DATE: 2019-02-10T07:55 | POD: DEN | PAGE 1 of 1