What a standard ADS-B transponder reports above FL600

Replay of the public 1090 MHz record of VSS Unity's eight rocket-powered flights (2023–2024), with the carrier aircraft VMS Eve as a control, and a look at how a ground system's filters would treat these objects. Data: adsb.lol daily archives (ODbL). No server, no external requests.

Flight show VMS Eve (carrier) Speed Time

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UTC

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Unity reported altitude (ft)

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Unity NIC (integrity category)

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seconds since last Unity position

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phase

Map (land outline, Natural Earth)

VSS UnityVMS Evehollow: NIC below 7

Reported altitude

barometric fieldgeometric-altitude flag sethollow: NIC below 7

Object require NIC ≥ 7 drop reports above 60 000 ft drop TIS-B and MLAT sources require NACp ≥ 8

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positions in record

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shown with these filters

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longest stretch hidden (s)

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max altitude shown (ft)

Map: shown vs hidden

shownhidden by a filter

Altitude: shown vs hidden

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