This trainee pilot has his first actual experience of piloting an aeroplane, while his instructor watches over his shoulder.   The trainee makes few mistakes, & his instructor is furious when they finally got back to hangar.  The instructor gives his subordinate an explicit dressing down, screaming abuse at him & than pulling out his panis, ordering student to sucking.  The confused & ashamed young guy doesn not know what to do, so he wordlessly get's down on his knees & begins to work staff of life with his mouth & his hand.  The poor stud really pays for his bad performance on airfield, taking it hard in backside as punishment.