Altitudes and Flight Levels

APPENDIX B

T-34C CONTACT

Example: 500 FIVE HUNDRED

4500 FOUR THOUSAND FIVE HUNDRED

Numbers above 9999 shall be spoken by separating the digits preceding the word "thousand."

Example: 10,000 ONE ZERO THOUSAND

13,400 ONE THREE THOUSAND FOUR HUNDRED

All other numbers shall be transmitted by pronouncing each digit.

Example: 10 ONE ZERO

When a radio frequency contains a decimal point, the decimal point is spoken as "point" or

"decimal."

Example: 322.1 THREE TWO TWO POINT ONE

322.1 THREE TWO TWO DECIMAL ONE

Altitudes and Flight Levels

Up to but not including 18,000 feet MSL (FL180), state the separate digits of the thousands, plus

the hundreds, if appropriate.

Example: 12,000 ONE TWO THOUSAND

12,500 ONE TWO THOUSAND FIVE HUNDRED

At and above 18,000 feet MSL (FL180), state the words "flight level" followed by the separate

digits of the flight level.

Example: 19,000 FLIGHT LEVEL ONE NINER ZERO

Feet in MSL (Mean Sea Level) is understood in altitudes; therefore it is not necessary to say

"feet."

Directions

State the three digits of all magnetic courses, bearings, headings, or wind directions. All are

assumed to be magnetic. The word "true" must be added when it applies.

Example:

(magnetic course) 005 ZERO ZERO FIVE

(true course) 050 ZERO FIVE ZERO TRUE

(magnetic bearing) 360 THREE SIX ZERO

(magnetic heading) 100 ONE ZERO ZERO

(wind direction) 220 TWO TWO ZERO

Speeds

State the separate digits of the speed followed by the word "knots." The controller may omit the

"knots" when ordering a speed adjustment: "Reduce/increase speed to one five zero."

Example: 250 TWO FIVE ZERO KNOTS

185 ONE EIGHT FIVE KNOTS

95 NINER FIVE KNOTS

B-4 COMMUNICATIONS