In Marvel Mystery #63 Miss America detects an invisible airplane, enters it and is promptly grabbed by two criminals who tie her up. On the next page she gets loose, but is KO'd from behind by the bad guys and tossed out of the plane. Because she can fly, she manages to save herself, return and defeat the criminals.
Source: my book

From issue #64:
Miss America appeared on the splash page of her story in Marvel Mystery #64 apparantly without her red pantyhose on. Probably the artist who "inked" this page accidently forgot to ink her legs. She looks like her legs are bare, and her mini skirt is very short -- WOW, she looks good!!
--paulpicks11