A routine procedure for checking for Sim's almost useless, but it clearly shows how and where that is included, still someone asking how to climb:) Make it all preferably as soon as possible, the earlier failure is detected, the more likely it solved without delays. Worst of all, when something is detected, when the passengers already seated. A couple of hard lessons to be lazy and have the desire does not arise, but just know, not all of it all each time performed, if not to say that few people ... Shooting HD camera, so no distortion - to watch as it is, without uzhaty on either side (16:9, 3:4)