Mad Dog 7.62 is right - I meant "tool tips". Changing cockpit language to english didn't help in this case, at least in training missions but that's what it's all about...
I've found another way - by comparing lesson_01.trk with lesson_02.trk I've noticed that first (with english tool tips) was missing, among other files, file named options.lua. There we can find this option: ["cockpitLanguage"] = "russian" which in this case is responsible for my inability to find switches needed to get the engines running :D :pilotfly: