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PRIMARY CODE: UNIDENTIFIED AERIAL PHENOMENON
Date: 14:00 02/03/2023
Status: Closed
POD: DEN
callsign: UAL532
Reporting Facility: ZDV
Aircraft: B738
Tail Number:
Operator: UAL
Origin: DEN
Destination: ORD
New Destination:
Operator Type: Commercial
Paged: NO
REMARKS
Aircraft reported large balloon they passed under while E bound at FL390, 20NM E of PWK.