FlightInfoEx returns no data available message

We are trying to use “FlightInfoEx” to get flight information for specific tail number. However, this service is always returning “no data available” SOAP FAULT message for the tail numbers A6-FDJ, A6-FDK, etc.

Is the flight data for the A6 tails protected or really not available in your system?

When you are in doubt of the behavior you are seeing through FlightXML, look on our website:
flightaware.com/live/flight/A6FDJ
flightaware.com/live/flight/A6FDK

For both of those aircraft, we have no more recent flight data within the last 2 weeks, which is the maximum time limit available for standard users via FlightXML.