Height of a flight

Altitude at which the aircraft can be defines a special rule. It's like a left-hand and right-hand traffic only two main areas . One direction of motion is from 0 ° to 179 °, different from 180 ° to 359 °. All directions are defined in degrees magnetic compass. This rule applies equally throughout the world without exception.
Depending on the direction of the plane can select only a certain height . At this height, no one will have the right to fly in the opposite direction. These heights are determined by a few simple rules . Also, you can just take the height of the finished table.
FL - this flight level, which indicates the height in hundreds of feet. For convenience, the last two are discussing is not zero and not prescribed. Not at very high altitudes can also use the full height of the designation. All of the samples indicated in the table below
VFR - it Visual Flight Rules, ie visual flight, when the benchmarks used for navigation map and the terrain.
IFR - this Instrument Flight Rules, ie instrument flight when used to guide the navigation instruments.