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PRIMARY CODE: UNIDENTIFIED AERIAL PHENOMENON
Date: 15:18 02/03/2023
Status: Closed
POD: DEN
Callsign: DAL1276
Aircraft: A321
Reporting Facility: ZKC
Tail Number:
Operator: DAL
Origin: DFW
Destination: MSP
New Destination:
Operator Type: Commercial
Paged: NO
REMARKS
Aircraft reported a large balloon off the left side while N bound at FL310, 13NM NW of STJ. The balloon was at approximately FL500 and above.