SNFO/SWSO VOICE COMMUNICATIONS
Radio frequencies contain a decimal point. The decimal point is normally left out.
THREE TWO TWO ONE
Altimeters contain a decimal point. The decimal point is always left out.
TWO NINER NINER TWO
Altitudes and Flight Levels
Up to but not including 18,000 feet MSL state the separate digits of the thousands,
plus the hundreds, if appropriate. Altitudes will be stated to the nearest 100 feet.
ONE TWO THOUSAND
ONE TWO THOUSAND FIVE HUNDRED
ONE TWO THOUSAND THREE HUNDRED
Feet in Mean Sea Level (MSL) is understood; therefore it is not necessary to say "feet".
At and above 18,000 feet MSL, state the words "flight level" followed by the separate
digits of the flight level.
FLIGHT LEVEL ONE NINER ZERO
FLIGHT LEVEL ONE NINER SEVEN
State the three digits of all magnetic courses, bearings, headings or wind directions. All are
assumed to be magnetic.
TECHNIQUE AND TERMINOLOGY