Master the 'dark art' of flying that timed holding pattern. Written by experienced instrument pilots and instructors Hold Calculator Pro will take the hard work out of the calculations. For the instrument student the hold can be extremely daunting - our visual output allows quick and simple understanding of the joining processes, calculation of Wind Correction Angle and recommended headings to fly in and outbound. Device GPS is can be used to calculate inflight instant wind to use when planning your hold.
