My base month is March, which means my grace month would be April. I did my first checkride in March 2004 but in 2005 I did it in April. My understanding is my base month can't change, and past grace month you can't fly at all. All of the checkrides were done in a sim. My company still has me scheduled for 135 in May. I don't know how that is legal. I asked and the CP said it is OK, they are usually pretty good about the rules but I don't know how they think they justify this, legally. Any opinion? I hate to call the local FSDO.