Airport Facilities

The ILS system, considered to be the ultimate new generation, is installed in almost all international airports. We may also find it in some regional airports, but due to its facility and comfort it offers, it is prefered for international traffic.
Every airport has its systems. These can be an ILS approach, either a VOR/DME approach(where the distance between the aircraft and the airport VOR/NDB is always mesured during the approach or even a visual approach (requires visibility above the minimums)
Every runway has its way of approach for landing. There are many factors, such as its length, its wide, its location, its airport 's traffic etc., to determine what type of approach this will have. In no way should the pilot be unprepared to execute any of these approaches. THat 's why there are plenty of charts and airport maps.. ;)