Originally Posted by
phlpsfrnk
Not sure how you came to that conclusion? What is moot, AC 91-57 as a whole or some specific parts? 336 certainly validates and expands notify the airport operator part. Except for the change from three to five miles there is nothing new in that interpretation.
Frank
Section 336 has no 400 foot requirement outside of 5 miles from and airport. The FAA interpretation does not mention any other requirement. So unless the FAA changes their mind from their interpretation the matter is moot.