If the aircraft are in use in the log they can't be removed. You can archive, otherwise delete the log entries and retry, that still may not work as we don't physically delete entries, we just mark them as deleted.I added a couple aircraft to play with landing currency.. It let me add, but won't let me remove an aircraft... tried iPhone and iPad.. click save with bullet off ..
OK.. will look into.. I was able to add / subtract 737NG-700 and -800.. but not able to subtract -400 I no longer fly..If the aircraft are in use in the log they can't be removed. You can archive, otherwise delete the log entries and retry, that still may not work as we don't physically delete entries, we just mark them as deleted.