Approximately 25% of the Gen Nav ATPL exam is CRP5!!!!!!!!!
Yes, I mean that quite sincerely, folks.
There is no way you can hope to pass Gen Nav unless you are really slick and good with the CRP5.
Don't take the view that "near enough will be good enough". It WON'T!!!
You may think that I'm being a bit demonstrative. I'm not. This is a carefully considered and serious post.
Get good at it and you'll pick up 25% of the marks in 25% of the questions. This means that you only have to pick up 2/3 of the marks on the remaining questions.
Too many students don't really believe this. Not surprisingly, they fail.
Gin Slinger speaks the truth. Rodger the Cabin Boy, the answer is "about 25%".