Originally Posted by ClarenceOver

You don't have to understand it in detail. All you have to know is what its function is. All i was asked on the multi was what does it do? And that was it. Explain that it uses oil pressure to move the pitch of the blades and thats it. Anything else is serious overkill and if an examiner goes that deep into it i would be shocked. Your main focus should be an EXPLANATION of aerodynamics and not just repeating what the instructor told you. If you know the aerodynamics inside and out know PAST and David Carson Bought A Low Fat Cow the rest is limitations. You will be fine. The multi commercial add on is easier and more laid back than the other tickets. Where you need to go absolutely crazy is on the cfi initial because you could end up getting a 9 hour oral and still fail if you know everything because the inspector wanted to be "thorough"