Page 6 - GEN 2021
P. 6
1.2 NUMBERS
Similarly numbers must also be said precisely especially when discussing height,
altitudes or flight levels. Any confusion could easily be dangerous!
See below for the pronunciation of numbers:
0 ZERO
DECIMAL: DAY-SEE-MAL
1 WUN
HUNDRED: HUN-DRED
2 TOO
THOUSAND: TOUSAND
3 TREE
4 FOW-ER
5 FIFE
6 SIX
7 SEVEN
8 AIT
9 NIN-ER
Combinations
When transmitting messages containing call signs, altimeter settings, flight levels,
altitudes, wind velocity, frequencies etc. etc. each letter and digit is pronounced.
Shown below is an example of a message with a combination of letters and
numbers.
Exceptions
Numbers used to describe Altitude, Height, Visibility, and Runway Visual Range
(RVR) which contain whole HUNDREDS or THOUSANDS use “Hundred” and
“Thousand”, otherwise single digits e.g. Squawk 6500 - “Squawk six fife zero zero”.
10 WUN ZERO
100 WUN HUNDRED
2500 TOO TOUSAND FIFE HUNDRED
11,000 WUN WUN TOUSAND
25,000 TWO FIFE TOUSAND
Remark: SQUAWK 2142 two one four two but Squawk 7000 is seven thousand
QNH 987 niner eight seven but qnh 1000 is qnh one thousand
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