Hatz biplane builders Carlo Cilliers and Rick Van Lehn describe their challenges and successes during a collaborative effort to construct side-by-side Hatz biplanes. Plus Ian and David break down remote ID, the National Mall flyover, FAA’s mental health guidelines, and the Van’s Aircraft plan to emerge from bankruptcy. Become a member of the world's largest aviation community at  www.aopa.org/join. Listen on a podcast app or AOPA Online.