Unable to get positions from some aircrafts

using the end point https://flightxml.flightaware.com/json/FlightXML2/InFlightInfo?ident= for aircrafts PSCNC, PSCNA, PSCND I am not able to get any positions.

Why?

regards

Are you receiving any result from InFlightInfo for those aircraft at all? If you are receiving a response, it should include the following elements when known: latitude, longitude, lowLatitude, lowLongitude, highLatitude, highLongitude, etc.

Note that if you are looking to get all positions for that flight (and not just the most recent position), then you can try looking at GetLastTrack, GetHistoricalTrack, or SearchBirdseyePositions.

No, all fields come with 0. For another aircraft I can get the positions.