This question has come up enough that it warrants a pinned topic. To quote one of the knowledgeable users here, "By default the CRJ is supplied by NavData Pro AIRAC 2102. Also the CRJ inhibits airports that have only runways that are 4500 FT or less in length as it would not really be possible to operate the CRJ safely from such runways."   On a related note, "The EFB currently has no V speed data for airports above 6000 feet. That was the highest altitude available  in the CRJ documen