Vampire wrote on Nov 30^th, 2013 at 3:09pm:

Hi, Got some problems with the smoke of the 727  :-[ It's black and after the black smoke it becomes normal, also is the black smoke blocked. Wanted to upload a picture, but im not allowed. Anyone a idea what is wrong ?

It' supposed to be there when the engines are running, but sometimes it's not. Press the "I" key (default keyboard command for turning smoke on/off) and it should be there again. ;)