Our pilots are licensed, qualified, accountable personnel who participate in ongoing professional development. Professional Affiliations: Heinen Brothers and our pilots are members of several state agricultural aviation associations as well as the National Agricultural Aviation Association. Recurring Training: Each year, our pilots attend the NAAREF PAASS Program, a program that educates pilots on key safety and drift minimization issues important to flying, modern agriculture and crop protection. Pattern Testing Aircraft – We participate in or host NAAREF Operation S.A.F.E. fly-ins to measure and evaluate our aircrafts’ performance to ensure the accuracy and effectiveness of our applications.