PS1 can simulate the entire FMC preflight procedure with position and performance initialization, thrust pre-programming with assumed temperature derates etc., takeoff planning such as CG /greenband
calculation, runway position shift, and so on. Version 1.3 of Precision Simulator has also got a completely new VNAV program. The vertical flight path guidance is now extremely smooth and accurate. PS1 models all the navigation
tools like “Direct To...”, “Intercept Leg To...”, “Via Airway... To...”, “Along Route Waypoints” etc. as well as fix info circles and bearings, holding patterns and many other functions. The overall look and feel of the
simulated FMC/CDU is very realistic (CRT blanking, delayed rebuilding etc.). As usual in PS1, everything is running in real time in line with a smooth harmonic aerodynamics model. Besides, for time acceleration purposes, the
simulator allows the user also to “skip” enroute waypoints - with time and fuel variables automatically corrected (please note: like in full-flight simulators, a “continuous” time acceleration is not possible due to the
enormous complexity of the aircraft systems simulations).
Limitations in version 1.3: FANS (Future Air Navigation System using GPS and ACARS) is not included (FANS is a relatively new option - until now, airlines have
introduced FANS only partially, or not at all, yet).