4-2-8. Figures a. Figures indicating hundreds and thousands in round number, as for ceiling heights, and upper wind levels up to 9,900 must be spoken in accordance with the following. EXAMPLE- 1. 500 five hundred 2. 4,500 four thousand five hundred b. Numbers above 9,900 must be spoken by separating the digits preceding the word "thousand." EXAMPLE- 1. 10,000 . one zero thousand 2. 13,500 . one three thousand five hundred c. Transmit airway or jet route numbers as follows. EXAMPLE- 1. V12 . Victor Twelve 2. J533 . J Five Thirty-Three d. All other numbers must be transmitted by pronouncing each digit. EXAMPLE- 10 . one zero e. When a radio frequency contains a decimal point, the decimal point is spoken as "POINT." EXAMPLE- 122.1 . one two two point one NOTE- ICAO procedures require the decimal point be spoken as "DECIMAL." The FAA will honor such usage by military aircraft and all other aircraft required to use ICAO procedures. 4-2-9. Altitudes and Flight Levels a. Up to but not including 18,000 feet MSL, state the separate digits of the thousands plus the hundreds if appropriate. EXAMPLE- 1. 12,000 . one two thousand 2. 12,500 . one two thousand five hundred b. At and above 18,000 feet MSL (FL 180), state the words "flight level" followed by the separate digits of the flight level. EXAMPLE- 1. 190 Flight Level One Niner Zero 2. 275 Flight Level Two Seven Five 4-2-10. Directions The three digits of bearing, course, heading, or wind direction should always be magnetic. The word "true" must be added when it applies. EXAMPLE- 1. (Magnetic course) 005 zero zero five 2. (True course) 050 zero five zero true 3. (Magnetic bearing) 360 . three six zero 4. (Magnetic heading) 100 . heading one zero zero Radio Communications Phraseology 4-2-7