Documents / Official release
This is a Federal Aviation Administration UAP report released in 2023. It is logged as case 237UAP00153 and is marked closed. It records a sighting on 3 February 2023 by the crew of a Cessna C525, callsign N800NB, flying northeast at FL290 in Kansas City Center (ZKC) airspace. The remarks list more than twenty further reports from airline and private crews. They describe a large white balloon carrying a basket or string, which they estimated at FL400 to FL600, near reference points around STL, HLV and FAM.
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## PRIMARY CODE: UNIDENTIFIED AERIAL PHENOMENON Date: 18:44 02/03/2023 Status: Closed Callsign: N800NB POD: DEN Aircraft: C525 Reporting Facility: ZKC Tail Number: Operator: Origin: Destination: New Destination: Operator Type: General Aviation Paged: NO ## REMARKS Sighted while northeast bound at FL290 @STL280090 Sighted while northeast bound at FL200@STL200000Multiple additional reports:A/C #2-AAL16047 Time 1930Z,@HLV315018,FL370,Balloon underneath,Est ALT of Balloon FL550,Sector ZKC31,Freq 125.67A/C #3-ATN3400 Time 1914Z,@HLV310022,FL370,Ballon on right side of A/C,Est ALT of Balloon FL400-500,sector ZKC31,Freq 125.67Balloon is getting smaller and has a basketA/C #4-N560LA Time 2017Z,@FTZ295030,FL400,Balloon was to the right and above,Est ALT of Balloon FL500,ZKC31Freq 125.67A/C #5-DAL1527 Time 2002Z,@HLV140/011,FL390,Balloon was on the left side of the A/C,Est ALT of Balloon FL450,ZKC31,Freq 125.67A/C #6-SWA2285 Time 1946Z,@COU310011,appears to be stationary,Balloon on left side A/C,Est ALT of BalloonFL500-600A/C #7-UPS2943 Time 2005Z,@HLV130008,appears to be heading 135,right side of A/C,Est ALT of Balloon FL450,ZKC31,Freq 125.67A/C #8-SWA3225 Time 1935Z,@HLV291020,appears to be Heading 230,right side of the A/C,Est ALT of BalloonFL400-500,ZKC30,Freq 119.47A/C #9-AAL1607 Time 1930Z,@STL287068,appears to be southbound,left side of the A/C,Est ALT of Balloon FL400-500,ZKC30,Freq 119.47A/C #10-AAY18 Time 1935Z,@STL285082,appears to be westbound,right side of the A/C,Est ALT of Balloon FL400-500,ZKC30,Freq 119.47A/C #11-UAL2049 Time 1930Z,@STL281085,appears to be westbound,right side of the A/C,Est ALT of Balloon FL400-500,ZKC30,Freq 119.47,very large,white string below the balloonA/C #12-UPS2192 Time:2225Z Altitude:FL410 flying east reported the balloon at 9 o'clock.A/C #13-N558R Time:2240z Altitude:FL410 flying east reported the balloon at 10:30 o'clock and 15NM estimated at FL600.A/C #14-DAL723 Time:2248z Altitude:FL350 flying east reported the balloon at 9 o'clock@FAM360020A/C #15-EJA348 Time:2250z Altitude:FL400 flying northwest reported the balloon at 3 o'clock@FAM360020A/C #16-HWA2034 Time:2258z Altitude:FL360 flying west reported the balloon at 10 o'clock@FAM015025"way above them"A/C #17-DAL691 Time:2302z Altitude:FL390 flying southeast reported the balloon off their left side and at least 10,000 feet above.A/C #18-AAY1023 Time:2306z Altitude:FL380 flying northwest reported the balloon off their right side@FAM350020.A/C #19-ACA7225 Time:2307z Altitude:FL360 flying southwest reported the balloon off their left side@FAM055015.A/C #20-LXJ469 Time:2315z Altitude:FL450 flying east reported a balloon@FAM019010 at approx.FL500-FL600. A/C #21 - EJA810 Time: 2350z Altitude: FL400 flying west reported a balloon @ approx. FL470 traveling southbound.
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Official release, from the nara collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 1 pages are in the text index: search them above, or from the library's search.