Originally Posted by
Sport_Pilot
Looks like we may have lost any mention of the 400 rule not sure. No time to review in depth right now. I depends on if this replaces 336 or amends 336 from the 2012 authorization bill.
The ATC part may cause this whole bill to be scraped and someone else may have a bill later that is not as nice for us.
There was never any mention of 400 foot anything in Section 336 of P.L. 112-95. Nor is it in the proposed Part 101.41 governing model aircraft operations. The one and only place 400 feet is officially mentioned is in AC 91-57A, where it is referred to as a "best practice". The 400 foot guideline in the registration process carries no regulatory or legal weight.