Added new questions for ADS-B, Washington DC FRZ & SFRA, aircraft interception procedures, 406 MHz ELTs, BasicMed, Final Approach Runway Occupancy Signal system, flight simulators (FFS, FTD, AATD, BATD), runway status lights (REL, THL, RIL), Chart Supplement publication, WAAS approaches (LPV, LNAV/VNAV, LNAV, LP, LNAV+V, LP+V, RNAV RNP 0.3), IFR GPS database currency, Q-routes, T-routes, and ATC separation of VFR versus IFR aircraft. Revised existing questions to correct errors and obtuse wording. Revised graphical images for better clarity and focus. Removed outdated questions. Updated for macOS 10.15 Catalina and compliance with macOS Dark Appearance.

Performance enhancements and version upgrade bug fix.

Version 2 incorporates a redesigned user interface and compatibility with OS X El Capitan. Oral exam questions were updated to reflect changes in the FARs and the Aeronautical Information Manual. All questions graphics were upgraded to high-resolution versions that are compatible with retinal displays. New questions were added for glass cockpit aircraft, tail-plane stalls in icing conditions, modern avionics, WAAS GPS receivers, LNAV vs. LNAV/VNAV vs. LPV vs. LP approaches, RNAV approaches with TAA design patterns and RNAV T-routes.