PPL Video Lectures (10 Jul 2020)

PPL Video Lectures covering Aerodynamics, General Knowledge, Performance, Meteorology And Navigation are now available through our website see front page for details.

× Welcome to the enquiries forum. this is the place to ask questions relating to our books, our courses or the school. If you have a more specific problem relating to aviation theory, check out the Question and Answer forums. That's the best place to post your technical questions.


  • kamran618
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kamran618 created the topic: CNAV

Good day bob. I been doing CNAV prep and finding my GS some time difference 3 to 4 knots some time hdg 1 degree different. What’s Casa take for examination. Please advise as I believe my calculations r good and my e6b circular is also correct no defects. Please reply thx

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  • Stuart Tait
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Stuart Tait replied the topic: CNAV

CASA don’t actually publish tolerances for calculated answers, but as long as you are using the computer correctly, I’m sure they will accept small differences in reading the scale on the computer. I’ve never heard of anyone complaining about that after sitting a CASA exam.

Good luck with your study

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