SKYWATCH INCIDENT REPORT PRIMARY CODE: UNIDENTIFIED AERIAL PHENOMENON Date: 19:26 10/31/2023 Callsign: UAL189 Origin: RPLL Status: Closed Aircraft: B738 Destination: GUM POD: DEN Tail Number: New Destination: Reporting Facility: ZOA Operator: UAL Operator Type: Commercial Paged: YES REMARKS Aircraft reported an unidentified aerial phenomenon off the left and right side side while E bound at FL350, over YELLO intersection. The unknown phenomenon was bright white lights traveling 100-500 NM SE bound at approximately FL410-FL800. SKYWATCH INCIDENT REPORT | DATE: 2023-10-31T19:26 | POD: DEN | PAGE 1 of 1