Dear Neighbor: I too took all of the tests, including commercial, at
FCC Detroit. I too remember one fellow who failed the sending test. I
also remember at least one question on transistors where none of the
provided "answers" were correct! One just had to get into the mind of
the person who wrote the exam and guess what that person was thinking.
I sure remember the pass requirement being 20 times 5 characters (100)
correct in a row (with punctuation and numbers counting as two
characters). The paper you wrote down the code on was collected
immediately after the code stopped.
Perhaps others have a different recollection.
73 Mac N8TT