The checkride you are asking about is the oral exam on your last day of Indoc. You will take a written exam on your last day followed by an oral given by one of the check airman. It will cover some 135 regs, Op Specs, GOM and a few other items. It's basically just to see if you paid attention during the week. Technically it's a 135.293 (a)(1)&(4-8) oral exam if you are curious to see what that all entails. Have fun, study a little bit, and have plenty of beers during the week!