e all consider ourselves to be rotor pros, and as such we study and memorize everything we can about how we conduct our daily operations, to
include the National Airspace System. We use the charts in the AIM, VFR sectionals and terminal area charts, and tablets with navigation applications. We refer to 14 CFR § 91.126-135. We check — and double check — the weather so we can remain compliant with 14 CFR § 91.155. VFR, IFR, GPS/WAAS and ATC – they all blend into this magnificent (and admittedly complex) system.