# Aviation General Units & Measurements Table

rc2017's version from 2017-08-14 09:56

## Section

Low Frequency Band (LF)30-300 KHz
Medium Frequency Band (MF)300-3000 KHz
High Frequency Band (HF)3-30 MHz
Very High Frequency Band (VHF)30-300 MHz
VOR frequency range108.0 MHz to 117.95 MHz
ILS frequency range108 MHz to 111.95 MHz first decimal digit odd, so 108.10, 108.15, 108.30 etc
1 Nautical Mile (in feet)6080 feet
1 Statute Mile (in feet)5280 feet
1 Km (in feet)3280 feet
1 Nautical Mile (in Km)1.852 Km
Diameter of the equator6888 NM
Polar Diameter6865 NM
Circumference of the earth21600 NM
Fahrenheit to Celcius0C = 32F 100C = 212F -40 C = -40 F
NDB frequency range190 kHz to 450 kHz (although they are allocated from 190 to 1750 kHz when paired with ADF)
Lift Formula1/2 x Roh x C(L) x V square x S (Roh = density of air, CL = Coefficient of Life, V = velocity of air over wings, S = surface area of wing)
Troposphere rangefrom Earth surface to 8-10 KM
Stratosphere rangeFrom tropopause to 50 KM
Stratopause rangefrom stratosphere to 56 KM
Mesosphere rangefrom stratopause to 85Km
What are the heights of Tropopause over equator? Over poles? 16 - 18 km over the equator 8-10 km over the poles
What is the composition of atmosphere?Nitrogen 78% Oxygen 21% Carbon Dioxide 0.03%
What is the ratio of Nitrogen & Oxygen by weight and volumeBy weight - 3:1, by Vol – 4
Squawk CodesA four-digit number sent out by an aircraft's transponder. 7700 (emergency), 7600 (radio failure), 7500 (Hijack)