Sperry - Fellow earthling, I'm sure we all went past 21 or were 21 at one point of time.
Aviator4u - Indeed, I'm surprised how I cleared my DGCA exams.
To be specific about that post, I never came across the spools of a jet engine for the DGCA conversion exam. I think we all got the same syllabus, didn't we?
Maybe you were born with an eye for 'spools of a jet engine'. Good for you. But I wasn't.