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Model
not level at the start of the rolls
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The path
traced out by the model is not a straight
line. i.e. the plane does barrel rolls or
suffers changes in heading
-
Roll
rate not uniform throughout three rolls
-
Pause
between rolls
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Sudden
changes in heading between rolls
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The axis
of the fuselage veers out at an angle to the
flight path
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Plane
changes altitude during rolls
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Plane
does not do exactly three rolls
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Plane is
not level at end of rolls
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Plane
fails to do level flight at end of rolls