SKYWATCH INCIDENT REPORT PRIMARY CODE: UNIDENTIFIED AERIAL PHENOMENON Date: 15:20 02/03/2023 Callsign: AAL639 Origin: ORD Status: Closed Aircraft: B738 Destination: TUS POD: DEN Tail Number: New Destination: Reporting Facility: ZKC Operator: AAL Operator Type: Commercial Paged: NO REMARKS Aircraft reported a large balloon off the right side while W bound at FL340, 13NM NW of STJ. The balloon was at approximately FL500 and above. SKYWATCH INCIDENT REPORT | DATE: 2023-02-03T15:20 | POD: DEN | PAGE 1 of 1