4/20/23
AIM
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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
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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
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1.
10,000 . . . . . one zero thousand
2.
13,500 . . . . . one three thousand five hundred
c.
Transmit airway or jet route numbers as follows.
EXAMPLE
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1.
V12 . . . . . . . Victor Twelve
2.
J533 . . . . . . . J Five Thirty
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Three
d.
All other numbers must be transmitted by pronouncing each digit.
EXAMPLE
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10 . . . . . . . . . . . one zero
e.
When a radio frequency contains a decimal point, the decimal point is spoken as “POINT.”
EXAMPLE
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122.1 . . . . . . . . . one two two point one
NOTE
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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.
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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
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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
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1.
190 . . . . . . . . Flight Level One Niner Zero
2.
275 . . . . . . . . Flight Level Two Seven Five
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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
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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
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