IFR is a flight simulator of Cessna 172RG Cutlass light aircraft. Due to limitations of early 1980s computers it doesn't offer external cockpit view, only an instrument panel (hence the name: Instrument Flight Rules) with full set of gauges: altimeter, tachometer, artificial horizon, airspeed, turn, and rate of climb indicators. The plane is also equipped with flaps, retractable landing gear, LORAN-C inertial navigation system, ILS and ADF (picking up 4 beacons and 2 airfields on the map).
The objective is to safely navigate between 4 airfields located on the map, while avoiding terrain obstacles etc. and within the aircraft fuel limit (~30 min.); the game flight model also includes stalls, wind and turbulence (difficulty level is adjustable).
Developed by Ron Wanttaja. For more information on the development of this software, check out this page.