I think you would most likely be hard pressed to find one flight anywhere in the world where someone wasn't travelling on a fraudulent/stolen passport
only the issuing countries computers would flag up the discrepancies, and the handful of other countries that have invested to resources to to access interpols data on the ground.
as to the 5 no shows... airlines try to overbook every flight by 15-20% because statistics show that about that number of pax will not board for whatever reason, stuck in traffic, slept in, denied boarding, forgot passport.