I don't see the point in doing any distance performance calculations for a SEP unless flying out of somewhere with a tiny runway. My 152 would never struggle getting off our 4000ft runway.
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Yes it's very annoying. Don't worry about it. In the exams they give you a good gap so you'd probably pick the right one. Hand it into your school instructors and see what they think.
Last edited by pudoc; 2nd June 2012 at 14:18.