Chapter 12.
Phraseology
Section 1. General
12-1-1. PURPOSE
This chapter prescribes standardized procedures and
phraseologies to be used by specialist when
communicating weather and aeronautical
information in broadcast, radiotelephone, and
interphone communications. Where position or
procedure-specific phraseology is required,
reference is to be made to the relevant chapter of this
order.
12-1-2. PHRASEOLOGY
The annotation PHRASEOLOGY denotes the
prescribed words and/or phrases to be used in
communications.
NOTE-
Specialists may, after first using the prescribed
phraseology for a specific procedure, rephrase the
message to ensure the content is understood. Good
judgment must be exercised when using nonstandard
phraseology.
12-1-3. WORDS AND PHRASES
Use the words or phrases in broadcast,
radiotelephone, and interphone communications as
contained in the Pilot/Controller Glossary.
12-1-4. ANNOUNCING MISSING ITEMS
With the exception of RVR, announce the word
“missing” when any item or component of a weather
report is not reported, or in place of unreadable or
obviously incorrect items or portions of weather
reports. When appropriate, instead of speaking the
name of several locations with missing reports,
announce: “Other scheduled reports missing.”
NOTE-
On occasion, a parameter from an automated observation
may be reported as missing in the body of the report but
is available as a manually reported parameter in the
remarks section. When the report is spoken, include the
manually reported element in its proper sequence within
the report.
12-1-5. ICAO PHONETICS
Use the ICAO pronunciation of numbers and, as
necessary, individual letters for clarity. The ICAO
radiotelephony alphabet and pronunciation guide are
contained in TBL 12-1-1.
TBL 12-1-1
ICAO Phonetics
Character
|
Word
|
Pronunciation
|
0
|
Zero
|
ZE-RO
|
1
|
One
|
WUN
|
2
|
Two
|
TOO
|
3
|
Three
|
TREE
|
4
|
Four
|
FOW-ER
|
5
|
Five
|
FIFE
|
6
|
Six
|
SIX
|
7
|
Seven
|
SEV-EN
|
8
|
Eight
|
AIT
|
9
|
Nine
|
NIN-ER
|
|
|
|
A
|
Alfa
|
ALFAH
|
B
|
Bravo
|
BRAHVOH
|
C
|
Charlie
|
CHARLEE
|
D
|
Delta
|
DELLTAH
|
E
|
Echo
|
ECKOH
|
F
|
Foxtrot
|
FOKSTROT
|
G
|
Golf
|
GOLF
|
H
|
Hotel
|
HOHTELL
|
I
|
India
|
INDEEAH
|
J
|
Juliett
|
JEWLEEETT
|
K
|
Kilo
|
KEYLOH
|
L
|
Lima
|
LEEMAH
|
M
|
Mike
|
MIKE
|
N
|
November
|
NOVEMBER
|
O
|
Oscar
|
OSSCAR
|
P
|
Papa
|
PAHPAH
|
Q
|
Quebec
|
KEHBECK
|
R
|
Romeo
|
ROWMEOH
|
S
|
Sierra
|
SEEAIRAH
|
T
|
Tango
|
TANGGO
|
U
|
Uniform
|
YOUNEEFORM
|
V
|
Victor
|
VIKTAH
|
W
|
Whiskey
|
WISSKEY
|
X
|
X-ray
|
ECKSRAY
|
Y
|
Yankee
|
YANGKEY
|
Z
|
Zulu
|
ZOOLOO
|
NOTE-
Syllables to be emphasized in pronunciation are in bold
face.
12-1-6. RELAY OF ATC
COMMUNICATIONS
Prefix a clearance, information, or a request for
information which will be relayed from a control
facility to an aircraft with the appropriate phrase
“A-T-C clears,” “A-T-C advises,” or “A-T-C
requests.”
12-1-7. EXPEDITIOUS COMPLIANCE
a. Use the word “immediately” only when
expeditious compliance is required to avoid an
imminent situation.
b. Use the word “expedite” only when prompt
compliance is required to avoid the development of
an imminent situation.
c. In either case, and if time permits, include the
reason for this action.
12-1-8. WEATHER PHRASEOLOGY
Use the following phraseology and procedures for
stating surface weather observations and for
information similarly encoded in other aviation
weather products and forecasts.
a. Location.
1. Announce the geographic name (not the
identifier) once.
EXAMPLE-
“Paducah.”
2. When the location name is duplicated within
500 miles, follow the location name with the state
name.
EXAMPLE-
“Columbus, Ohio.”
3. When weather reports originate at more than
one airport at the same geographical location,
identify the airport.
EXAMPLE-
“Anchorage, Merrill.”
“Chicago, O'Hare.”
4. Where it is considered necessary and is
requested by the military base commander, broadcast
military observations by stating the location, the
name of the airport if different, and the controlling
military branch.
EXAMPLE-
“Joint Base Andrews.”
“Elmendorf, Air Force Base.”
“Fort Riley, Marshall Army Air Field.”
“Norfolk Naval Air Station.”
b. If “AUTO” appears after the date/time element
and is presented as a singular report, follow the
location with the word “AUTOMATED.”
PHRASEOLOGY-
(Location) AUTOMATED.
c. If a special report is the most recent observation
available, follow the location with the words
“SPECIAL WEATHER REPORT,” (last two digits
of the time) “OBSERVATION.” Use data from the
record report to fill in the items not included in the
special observation, such as temperature and dew
point.
d. If the weather data is not available, state the
location and the word “missing.”
e. Wind Direction and Speed. Announce surface
wind direction and speed by stating the word “wind”
followed by the separate digits of the wind direction
to the nearest 10 degrees and the separate digits of the
speed. A “G” between two wind speed values is
announced as “gusts.” State local wind as it appears
in the report. Announce the variability of wind at the
end of the wind group. (See TBL 12-1-2.)
TBL 12-1-2
Wind Direction and Speed
Wind
|
Phraseology
|
00000KT
|
WIND CALM.
|
26012KT
|
WIND TWO SIX ZERO AT ONE
TWO.
|
29012KT
260V320
|
WIND TWO NINER ZERO AT
ONE TWO WIND VARIABLE
BETWEEN TWO SIX ZERO AND
THREE TWO ZERO.
|
30008KT
|
WIND THREE ZERO ZERO AT
EIGHT.
|
36012G20KT
|
WIND THREE SIX ZERO AT ONE
TWO GUSTS TWO ZERO.
|
VRB04KT
|
WIND VARIABLE AT FOUR.
|
f. Visibility.
State the word “visibility” followed by the visibility
values in miles and/or fractions of miles, except
announce values indicated by the figure 0 as “zero.”
Announce the separate digits of whole numbers as
applicable. (See TBL 12-1-3.)
TBL 12-1-3
Visibility
Contraction
|
Phraseology
|
0SM
|
Visibility zero.
|
1/16SM
|
Visibility one sixteenth.
|
1/8SM
|
Visibility one eighth.
|
M1/4SM
|
Visibility less than one quarter.
|
3/4SM
|
Visibility three quarters.
|
11/2SM
|
Visibility one and one-half.
|
8SM
|
Visibility eight.
|
25SM
|
Visibility two five.
|
NOTE-
When visibility is less than 3 miles and variable, this
information is reported in the remarks.
g. RVR/RVV.
1. Provide RVR/RVV information by stating
the runway, the abbreviation RVR/RVV, and the
indicated value. The abbreviations “RVR” or
“RVV” may be spoken in lieu of “visual range” or
“visibility value.” When the indicated values are
separated by a V, preface the values with the words
“variable,” followed by the first value, the word “to,”
then the second value. (See TBL 1214.)
TBL 12-1-4
RVR/RVV
RVR/RVV
|
Phraseology
|
R36VV11/2
|
“Runway three six, R-V-V one
and one-half.”
|
R05LVV1V2
|
“Runway five left, R-V-V
variable between one and two.”
|
R18/2000V3000FT
|
“Runway one eight, R-V-R
variable between two thousand
to three thousand. Or Runway
one eight visual range variable
between two thousand and three
thousand.”
|
R26R/2400FT
|
“Runway two six right visual
range two thousand four
hundred.”
|
2. When there is a requirement to issue an RVR
or RVV value and a visibility condition greater or less
than the reportable values of the equipment is
indicated, state the condition as “MORE THAN” or
“LESS THAN” the appropriate minimum or maximum
readable value. (See TBL 1215.)
TBL 12-1-5
RVR/RVV
RVR/RVV
|
Phraseology
|
R16/M0600FT
|
``Runway one six runway
visual range less than six
hundred. Or Runway one six
R-V-R less than six
hundred.''
|
R36L/M0600V2500FT
|
``Runway three six left,
R-V-R variable between
less than six hundred and
two thousand five hundred.
Or Runway three six left
visual range variable
between less than six
hundred and two thousand
five hundred.''
|
R36/P6000FT
|
``Runway three six R-V-R
more than six thousand. Or
Runway three six visual
range more than six
thousand.''
|
h. Weather Elements. TBL 1216 depicts sample
phraseology for weather element contractions.
Intensity refers to precipitation, not descriptors.
Proximity is spoken after the phenomenon to which
it refers. Descriptors are spoken ahead of weather
phenomenon with the exception of ``showers'' which
is spoken after the precipitation. TBL 1217 contains
a complete list of weather elements and appropriate
phraseology.
TBL 12-1-6
Examples of Combining Intensity, Descriptors and
Weather Phenomenon.
Contractions
|
Phraseology
|
BLSN
|
BLOWING SNOW
|
-FZRAPL
|
LIGHT FREEZING RAIN, ICE
PELLETS
|
FZRA
|
FREEZING RAIN
|
FZDZ
|
FREEZING DRIZZLE
|
MIFG
|
SHALLOW FOG
|
-SHRA
|
LIGHT RAIN SHOWERS
|
SHRA
|
RAIN SHOWERS
|
SHSN
|
SNOW SHOWERS
|
TSRA
|
THUNDERSTORM, RAIN
|
+TSRA
|
THUNDERSTORM, HEAVY RAIN
(SHOWERS)1
|
+TSRAGR
|
THUNDERSTORM, HEAVY
RAIN, HAIL
|
VCSH
|
SHOWERS IN THE VICINITY
|
1Since thunderstorms imply showery precipitation,
``showers'' may be used to describe precipitation that
accompany thunderstorms.
|
TBL 12-1-7
Weather Elements
INTENSITY
or
PROXIMITY
1
|
DESCRIPTOR
2
|
PRECIPITATION
3
|
OBSCURATION
4
|
OTHER
5
|
-
|
Light
|
MI
|
Shallow
|
DZ
|
Drizzle
|
BR
|
Mist
|
PO
|
Well-
Developed
Dust/Sand
Whirls
|
|
|
BC
|
Patchy
|
RA
|
Rain
|
FG
|
Fog
|
SQ
|
Squalls
|
|
Moderate
(No Qualifier)
|
DR
|
Low Drifting
|
SN
|
Snow
|
FU
|
Smoke
|
FC
+FC
|
Funnel Cloud,
Tornado or
Waterspout
|
|
|
BL
|
Blowing
|
SG
|
Snow Grains
|
DU
|
Dust
|
SS
|
Sandstorm
|
+
|
Heavy
|
SH
|
Showers
|
IC
|
Ice Crystals
|
SA
|
Sand
|
DS
|
Duststorm
|
|
|
TS
|
Thunderstorm
|
PL
|
Ice Pellets
|
HZ
|
Haze
|
|
|
VC
|
In the Vicinity
|
FZ
|
Freezing
|
GR
|
Hail
|
PY
|
Spray
|
|
|
|
|
PR
|
Partial
|
GS
|
Small Hail or
Snow Pellets
(<1/4”)
|
VA
|
Volcanic Ash
|
|
|
|
|
|
|
UP
|
*Unknown
Precipitation
|
|
|
|
|
* Automated stations only.
|
i. Ceiling and Sky Coverage.
1. State sky coverage in the same order as
reported on the weather observation. Announce
ceiling as follows: (See TBL 12-1-8.)
TBL 12-1-8
Ceiling and Sky Coverage
Designator
|
Phraseology
|
BKN0001
|
SKY PARTIALLY OBSCURED
|
BKN0002
|
CEILING LESS THAN FIVE
ZERO BROKEN
|
FEW0001
|
SKY PARTIALLY OBSCURED
|
FEW0002
|
FEW CLOUDS AT LESS THAN
FIVE ZERO
|
(lowest layer aloft)
BKN/OVC
|
(precede with) CEILING
|
SCT0001
|
SKY PARTIALLY OBSCURED
|
SCT0002
|
LESS THAN FIVE ZERO
SCATTERED
|
VV
|
INDEFINITE CEILING
|
1 Surface-based obscurations. Requires remarks,
i.e. RMK FG SCT000, FU BKN000, etc.
2 No remark means the layer is aloft.
|
2. State cloud heights in tens, hundreds and/or
thousands of feet. (See TBL 12-1-9.)
TBL 12-1-9
Cloud Heights
Number
|
Phraseology
|
0001
|
ZERO
|
003
|
THREE HUNDRED
|
018
|
ONE THOUSAND EIGHT
HUNDRED
|
200
|
TWO ZERO THOUSAND
|
1 Spoken as zero only when used with VV.
|
NOTE-
1. When the ceiling is less than 3,000 feet and variable,
the variable limits will be reported in the remarks.
2. When communicating weather information on the
TIBS broadcast or telephone, specialist may announce
cloud heights in either group form or in hundreds or
thousands of feet, such as seventeen thousand or one
seven thousand.
3. “Group form” is the pronunciation of a series of
numbers as the whole number, or pairs of numbers they
represent rather than pronouncing each separate digit.
The use of group form may, however, be negated by
fourdigit identifiers or the placement of zeros in the
identifier.
3. Announce sky conditions as indicated below.
(See TBL 12110.)
TBL 12-1-10
Sky Conditions
Contraction
|
Phraseology
|
BKN
|
(height) BROKEN
|
CLR1
|
CLEAR BELOW ONE TWO
THOUSAND
|
FEW
|
FEW CLOUDS AT (height)
|
OVC
|
(height) OVERCAST
|
SCT
|
(height) SCATTERED
|
SKC
|
CLEAR
|
1 Automated weather reports.
|
4. TBL 12111 contains examples of broadcast
phraseology of sky and ceiling conditions.
TBL 12-1-11
Sky and Ceiling Conditions
Condition
|
Phraseology
|
BKN000
BKN010
BKN050 RMK
FG BKN000
|
SKY PARTIALLY OBSCURED,
CEILING ONE THOUSAND
BROKEN, FIVE THOUSAND
BROKEN. FOG OBSCURING
FIVE TO SEVEN EIGHTS OF THE
SKY.
|
BKN010
|
CEILING ONE THOUSAND
BROKEN.
|
SCT000
SCT020
OVC035 RMK
FG SCT000
|
SKY PARTIALLY OBSCURED,
TWO THOUSAND SCATTERED,
CEILING THREE THOUSAND
FIVE HUNDRED OVERCAST.
FOG OBSCURING THREE TO
FOUR EIGHTS OF THE SKY.
|
SCT020
OVC250
|
TWO THOUSAND SCATTERED,
CEILING TWO FIVE THOUSAND
OVERCAST.
|
VV000
|
INDEFINITE CEILING ZERO.
|
VV012
|
INDEFINITE CEILING ONE
THOUSAND TWO HUNDRED.
|
j. Announce surface temperature and dew point by
stating the words “temperature” or “dew point,” as
appropriate, followed by the temperature in degrees
Celsius. Temperatures below zero are announced by
prefixing the word “minus” before the values. (See
TBL 12112.)
TBL 12-1-12
Temperature/Dewpoint
Reading
|
Phraseology
|
02/M01
|
``Temperature two, dew point minus
one.''
|
04/02
|
``Temperature four, dew point two.''
|
18/13
|
``Temperature one eight, dew point one
three.''
|
k. Altimeter Setting.
1. State the word “altimeter” followed by the
four digits of the altimeter setting. (See TBL
12113.)
TBL 12-1-13
Altimeter Setting
Altimeter Setting
|
Phraseology
|
A2989
|
``Altimeter two niner eight niner.''
|
A3001
|
``Altimeter three zero zero one.''
|
A3025
|
``Altimeter three zero two five.''
|
2. Identify the source of all altimeter settings
when issued, if not given as part of an identified
surface observation. Provide the time of the report if
more than one hour old.
PHRASEOLOGY-
(airport name) (time of report if more than one hour old)
ALTIMETER (setting).
3. If a request for the altimeter setting in MBs is
received, announce the separate digits of the MB
equivalent value, using the MB conversion chart,
followed by the word “Mbs.” If the MB setting is not
a whole number, always round down. (See
TBL 13114.)
REFERENCE-
FAAO JO 7110.10, Para 435f, Routine Radio Contacts
TBL 12-1-14
Millibar Conversion
Millibar
Conversion
|
Phraseology
|
956.3
|
``Altimeter niner five six
millibars.''
|
1002.0
|
``Altimeter one zero zero two
millibars.''
|
1058.9
|
``Altimeter one zero five eight
millibars.''
|
4. When altimeter is in excess of 31.00:
(a) Advise all aircraft.
PHRASEOLOGY-
ALTIMETER GREATER THAN THREE ONE ZERO
ZERO. HIGH PRESSURE ALTIMETER PROCEDURES
ARE IN EFFECT.
(b) Advise VFR aircraft to set altimeter to
31.00 en route.
PHRASEOLOGY-
RECOMMEND YOU SET ALTIMETER THREE ONE
ZERO ZERO EN ROUTE.
12-1-9. WEATHER REMARKS
Announce pertinent remarks from surface weather
observations in accordance with FAA Order JO
7340.2, Contractions, and as shown in the following
tables. Do not state additive data or other information
intended for NWS analysis or processing that does
not contribute to the description of the conditions
occurring at the station.
a. Sky and Ceiling (See TBL 12-1-15.)
TBL 12-1-15
Sky and Ceiling
Contraction
|
Phraseology
|
CIG 005V010
|
``Ceiling variable
between five hundred and
one thousand.''
|
CIG 020 RY11
|
``Ceiling two thousand at
runway one one.''
|
CB N MOV E
|
``Cumulonimbus north
moving east.''
|
CBMAM DSNT S
|
``Cumulonimbus
mammatus distant south.''
|
CLDS TPG MT SW
|
``Clouds topping
mountain southwest.''
|
CONTRAILS N FL420
|
``Condensation trails
north at flight level four
two zero.''
|
FRQ LTCIC VC
|
``Frequent lightning in
cloud in the vicinity.''
|
LWR CLDS NE
|
``Lower clouds
northeast.''
|
OCNL LTGICCG NW
|
``Occasional lightning in
cloud and cloud to ground
northwest.''
|
RDGS OBSCD W-N
|
``Ridges obscured west
through north.''
|
b. Obscuring Phenomena. (See TBL 12-1-16.)
TBL 12-1-16
Obscuring Phenomena
Contraction
|
Phraseology
|
BLSN SCT000
|
``Blowing snow obscuring three
to four-eights of the sky.''
|
DU BKN000
|
``Dust obscuring five to
seven-eights of the sky.''
|
FG FU FEW000
|
``Fog and smoke obscuring one to
two-eights of the sky.''
|
FU SCT020
|
``Smoke layer two thousand
scattered.''
|
SN BKN000
|
``Snow obscuring five to
seven-eights of the sky.''
|
c. Visibility. (See TBL 12-1-17.)
TBL 12-1-17
Visibility
Contraction
|
Phraseology
|
SFC VIS 1/2
|
``Surface visibility
one-half.''
|
SFC VIS 15 TWRINC
|
``Surface visibility one five,
tower in clouds.''
|
TWR VIS 3/4
|
``Tower visibility
three-quarters.''
|
VIS S 1 W 1/4
|
``Visibility south one, west
one-quarter.''
|
VIS 1V3
|
``Visibility variable between
one and three.''
|
d. Weather and obstruction to visibility.
(See TBL 12-1-18.)
TBL 12-1-18
Weather and Obstruction
Contraction
|
Phraseology
|
BCFG S
|
``Patchy fog south.''
|
DUST DEVILS NW
|
``Dust devils northwest.''
|
FG DSIPTG
|
``Fog dissipating.''
|
FU DRFTG OVR
FLD
|
``Smoke drifting over field.''
|
FUOCTY
|
``Smoke over city.''
|
GR 2
|
``Hailstones two inches in
diameter.''
|
INTMT -RA
|
``Intermittent light rain.''
|
OCNL LTG DSNT
NW
|
``Occasional lightning distant
northwest.''
|
OCNL SHRA
|
``Occasional moderate rain
showers.''
|
-RA OCNLY +RA
|
``Light rain occasionally
heavy.''
|
RAB30
|
``Rain began at three zero.''
|
SNB15E40
|
``Snow began at one five,
ended at four zero.''
|
SNINCR 5/10
|
``Snow increase five inches
during past hour, ten inches on
the ground.''
|
TS OHD MOV E
|
``Thunderstorm overhead,
moving east.''
|
FRQ LTGCG TS W
MOV E
|
``Frequent lightning cloud to
ground, thunderstorm west
moving east.''
|
UNCONFIRMED
TORNADO 15W
OKC MOV NE 2015
|
``Unconfirmed tornado one
five west of Oklahoma City,
moving northeast sighted at
two zero one five zulu.''
|
WET SN
|
``Wet snow.''
|
e. Wind. (See TBL 12-1-19.)
TBL 12-1-19
Wind
Contraction
|
Phraseology
|
PK WND 33048/22
|
``Peak wind three three
zero at four eight occurred
at two two past the hour.''
|
WSHFT 30
|
``Wind shifted at three
zero.''
|
f. Pressure. (See TBL 12-1-20.)
TBL 12-1-20
Pressure
Contraction
|
Phraseology
|
PRESFR
|
``Pressure falling rapidly.''
|
PRESRR
|
``Pressure rising rapidly.''
|
g. Freezing Level Data. (See TBL 12-1-21.)
TBL 12-1-21
Freezing Level Data
Contraction
|
Explanation
|
RADAT 87045
|
Relative humidity 87
percent, only crossing of
zero degrees Celsius
isotherm was four thousand
five hundred M-S-L.
|
RADAT 87L024105
|
Relative humidity 87
percent at the lowest
crossing of zero degrees
Celsius. Two crossings
occurred at two thousand
four hundred and one zero
thousand five hundred
M-S-L.
|
RADAT MISG
|
The sounding terminated
below the first crossing of
the zero degree Celsius
isotherm. Temperatures
were all above freezing.
|
RADAT ZERO
|
The entire sounding was
below zero degrees Celsius.
|
h. Icing Data. (See TBL 12-1-22.)
TBL 12-1-22
Icing Data
Contraction
|
Explanation
|
RAICG 12 MSL
|
Icing at one thousand two
hundred M-S-L.
|
RAICG 24 MSL SNW
|
Icing at two thousand four
hundred M-S-L in snow.
|
i. Maintenance Data. (See TBL 12-1-23.)
TBL 12-1-23
Maintenance Data
RVR/RVV
|
Phraseology
|
PNO
|
``Precipitation amount not
available.''
|
RVRNO
|
``R-V-R (or runway visual
range) information not
available.''
|
TSNO
|
``Thunderstorm/lightning
information not available.''
|
VISNO
|
``Visibility sensor
information not available.''
|
12-1-10. WEATHER ADVISORIES
a. When announcing weather advisories, include
the complete advisory description including the
product name and alphanumeric identification.
Specify Eastern, Central, or Western section as
applicable when stating WSTs.
PHRASEOLOGY-
AIRMET
ALERT WEATHER WATCH, ONE ZERO SEVEN FOR
SEVERE THUNDERSTORMS
CONVECTIVE SIGMET TWO SEVEN EASTERN
HOUSTON CENTER WEATHER ADVISORY ONE,
ISSUANCE TWO
SIGMET WHISKEY THREE
b. Do not read the OUTLOOK section of WSTs
when stating the advisory. Data contained in the
OUTLOOK concerning convective activity location,
movement, and intensity may be extracted for
compilation in forecast summarizations.
EXAMPLE-
``Convective SIGMET one seven Eastern-from five zero
south of St. Petersburg to three zero south of Columbus,
line of thunderstorms three five miles wide moving east at
one five knots. Maximum tops four seven thousand.''
c. VNR. When VFR flight is proposed and sky
conditions or visibilities are present or forecast,
surface based or aloft that, in your judgment, would
make visual flight doubtful, include one of the
following statements:
PHRASEOLOGY-
V-F-R FLIGHT NOT RECOMMENDED (location if
applicable) DUE TO (conditions).
or
V-F-R NOT RECOMMENDED.
12-1-11. RADAR
Use the following phraseology and procedures for
communicating radar products:
Radar displays. When stating precipitation intensity
from a radar display (such as NEXRAD), use the
following four categories as appropriate:
a. Light: (Equates to radar return levels of less
than 30 dBZ.)
b. Moderate: (Equates to radar return levels of 30
to 40 dBZ.)
c. Heavy: (Equates to radar return levels of greater
than 40 to 50 dBZ.)
d. Extreme: (Equates to radar return levels of
greater than 50 dBZ.)
12-1-12. WINDS AND TEMPERATURES
ALOFT FORECAST (FB)
When announcing the FB, use the following
phraseology and procedures:
a. State the altitude, then announce wind direction
and speed by the separate digits of the wind direction
to the 10degree multiple, the word AT, and the
separate digits of the speed.
b. When the forecast speed is less than 5 knots, the
coded group is 9900 and read, “light and variable.”
c. Encoded wind speed 100 to 199 knots have 50
added to the direction code and 100 subtracted from
the speed.
d. If wind speed is forecast at 200 knots or greater,
the wind group is coded as 199 knots; for example,
7799 is decoded 270 degrees at 199 knots or greater.
e. A sixdigit group includes forecast temperature.
Provide temperatures on request only, stating the
word ”temperature,” followed by the word “minus,”
as appropriate, and the separate digits. (See
TBL 12124.)
TBL 12-1-24
Altitude
Coded
|
Phraseology
|
2707
|
``(altitude), two seven zero at seven.''
|
7799
|
``(altitude), two seven zero at one niner
niner or greater.''
|
850552
|
``(altitude), three five zero at one zero
five, temperature minus five two.''
|
9900+00
|
``(altitude), light and variable,
temperature zero.''
|
12-1-13. NUMBER USAGE
State numbers as follows:
a. Serial numbers. The separate digits.
(See TBL 12-1-25.)
TBL 12-1-25
Serial Numbers
Number
|
Phraseology
|
11,495
|
``One one four niner five.''
|
20,069
|
``Two zero zero six niner.''
|
b. Altitudes or flight levels.
1. Altitudes. Pronounce each digit in the
number of hundreds or thousands followed by the
word “hundred” or “thousand,” as appropriate.
(See TBL 12126.)
TBL 12-1-26
Altitudes
Altitude
|
Phraseology
|
5,000
|
``Five thousand.''
|
10,000
|
``One zero thousand.''
|
11,500
|
``One one thousand five
hundred.''
|
2. Altitudes may be restated in group form for
added clarity if the specialist chooses.
(See TBL 12-1-27.)
TBL 12-1-27
Altitudes - continued
Altitude
|
Phraseology
|
10,000
|
``Ten thousand.''
|
11,500
|
``Eleven thousand five
hundred.''
|
3. Flight levels. The words “flight level,”
followed by the separate digits of the flight level.
(See TBL 12-1-28.)
TBL 12-1-28
Flight Levels
Flight Level
|
Phraseology
|
180
|
``Flight level one eight zero.''
|
270
|
``Flight level two seven zero.''
|
4. MDA/DH Altitudes. The words “minimum
descent altitude” or “decision height,” followed by
separate digits of the MDA/DH altitude. (See
TBL 12129.)
TBL 12-1-29
MDA/DH Altitude
Altitude
|
Phraseology
|
486
|
``Decision height, four eight six.''
|
1,320
|
``Minimum descent altitude, one
three two zero.''
|
c. Time.
1. General time information. The four separate
digits of the hour and minutes in terms of
Coordinated Universal Time (UTC). (See
TBL 12-1-30.)
TBL 12-1-30
Coordinated Universal Time
Time
|
Phraseology
|
0115 (UTC)
|
``Zero one one five.''
|
1315 (UTC)
|
``One three one five.''
|
2. Upon request. The four separate digits of the
hours and minutes in terms of UTC followed by the
local time equivalent; or the local time equivalent
only. Local time may be based on the 24hour clock
system. (See TBL 12131.) The term “ZULU” may
be used to denote UTC.
TBL 12-1-31
Coordinated Universal Time
Time
|
Phraseology
|
2:30 p.m.
or
|
``Two thirty P-M. local.''
|
2230 (UTC), 2:30
p.m
or
|
``Two two three zero, two
thirty P-M. local.''
|
2230 (UTC), 1430
PST
|
``Two two three zero, one four
three zero Pacific or local.''
|
3. Time check. The word ``time'' followed by
the four separate digits of the hour and minutes, and
nearest quarter minute. Fractions of a quarter minute
less than eight seconds are stated as the preceding
quarter minute; fractions of a quarter minute of 8
seconds or more are stated as the succeeding quarter
minute. (See TBL 12132.)
TBL 12-1-32
Time Check
Time
|
Phraseology
|
1415:06
|
``Time, one four one five.''
|
1415:10
|
``Time, one four one five and
one-quarter.''
|
4. Abbreviated time. The separate digits of the
minutes only. (See TBL 12-1-33.)
TBL 12-1-33
Abbreviated Time
Time
|
Phraseology
|
1415
|
``One five.''
|
1420
|
``Two zero.''
|
NOTE-
Change to the next minute is made at the minute plus
30 seconds.
d. Field elevation. The words “field elevation,”
followed by the separate digits of the elevation. (See
TBL 12-134.)
TBL 12-1-34
Field Elevation
Elevation
|
Phraseology
|
17 feet
|
``Field elevation, one seven.''
|
187 feet
|
``Field elevation, one eight seven.''
|
2,817 feet
|
``Field elevation, two eight one
seven.''
|
e. The number “0” is stated as “zero,” except
where it is used in approved “group form” for
authorized aircraft callsigns and in stating altitudes.
EXAMPLE-
``Field elevation one six zero.''
``Heading three zero zero.''
``One zero thousand five hundred.''
“Western five thirty.”
“Ten thousand five hundred.”
“EMAIR One Ten”
f. Heading. The word “heading,” followed by the
three separate digits of the number of degrees,
omitting the word “degrees.” Use heading
360 degrees to indicate a north heading. (See
TBL 12135.)
TBL 12-1-35
Heading/Degrees
Heading
|
Phraseology
|
5 degrees
|
``Heading, zero zero five.''
|
30 degrees
|
``Heading, zero three zero.''
|
360 degrees
|
``Heading, three six zero.''
|
g. Radar beacon codes. The word squawk
followed by the separate digits of the four-digit code.
(See TBL 12-1-36.)
TBL 12-1-36
Radar Beacon
Code
|
Phraseology
|
1000
|
``Squawk one zero zero zero.''
|
2100
|
``Squawk two one zero zero.''
|
h. Runways. The word “runway” followed by the
separate digits of the runway designation. For a
parallel runway, state the word “left,” “right,” or
“center” if the letter “L,” “R,” or “C “ is included in
the designation. (See TBL 12137.)
TBL 12-1-37
Runway Designation
Designation
|
Phraseology
|
3
|
``Runway three.''
|
8L
|
``Runway eight left.''
|
27R
|
``Runway two seven right.''
|
i. Frequencies.
1. The separate digits of the frequency, inserting
the word “point” where the decimal occurs. When the
frequency is in the L/MF or HF band, include the
word “kilohertz.” (See TBL 12138.)
TBL 12-1-38
Frequencies
Frequency
|
Phraseology
|
302 kHz
|
``Three zero two kilohertz.''
|
5631 kHz
|
``Five six three one kilohertz.''
|
126.55 MHz
|
``One two six point five five.''
|
135.275 MHz
|
``One three five point two seven.''
|
2. Issue MLS/TACAN frequencies by stating
the assigned two or three digit channel number.
EXAMPLE-
``M-L-S channel five three zero.''
``TACAN channel niner seven.''
j. Speeds.
1. The separate digits of the speed followed by
the word knots. (See TBL 12-1-39.)
TBL 12-1-39
Speed
Speed
|
Phraseology
|
95
|
``Niner five knots.''
|
185
|
``One eight five knots.''
|
250
|
``Two five zero knots.''
|
2. For Mach speeds, the word “mach,” followed
by the separate digits of the Mach number inserting
the word “point” where the decimal occurs. (See TBL
12140.)
TBL 12-1-40
Speed
Mach Number
|
Phraseology
|
0.64
|
``Mach point six four.''
|
0.7
|
``Mach point seven.''
|
1.5
|
``Mach one point five.''
|
k. Miles. The separate digits of the mileage
followed by the word mile(s). (See TBL 12-1-41.)
TBL 12-1-41
Miles
Miles
|
Phraseology
|
30
|
``Three zero miles.''
|
12-1-14. FACILITY IDENTIFICATION
Identify facilities as follows:
a. Airport traffic control towers. State the name of
the facility followed by the word “tower.” Where
military and civil airports are located in the same
general area and have similar names, state the name
of the military service followed by the name of the
military facility and the word “tower.”
EXAMPLE-
``Barksdale Tower.''
``Columbus Tower.''
``Navy Jacksonville Tower.''
b. Function within a terminal facility. State the
name of the facility followed by the name of the
function.
EXAMPLE-
``Boston Departure.''
``LaGuardia Clearance Delivery.''
``O'Hare Ground.''
c. Approach control facilities, including
TRACONs, RAPCONs, RATCFs, and ARACs.
State the name of the facility followed by the word
approach. Where military and civil facilities are
located in the same general area and have similar
names, state the name of the military service followed
by the name of the military facility and the word
“approach”.
EXAMPLE-
``Denver Approach.''
``Griffiss Approach.''
``Navy Jacksonville Approach.''
d. Air route traffic control centers. State the name
of the facility followed by the word “center.”
e. When calling or replying on an interphone line
which connects only two facilities, you may omit the
facility's name.
EXAMPLE-
``Flight Data.''
``Inflight, clearance request.''
f. Flight service stations.
1. Inflight position. State the name of the FSS
followed by the word “radio,” and position if
appropriate.
EXAMPLE-
``Fairbanks Radio.''
``Miami Radio, Inflight.''
2. Flight Watch position. State the name of the
associated ARTCC followed by the words “FLIGHT
WATCH.”
EXAMPLE-
``Indianapolis Flight Watch.''
3. When calling or replying on interphone lines
connecting more than one facility, state the name of
the FSS followed by the word “radio.”
EXAMPLE-
``Cleveland Radio.''
4. When answering public access telephone
lines, state the geographical name of the FSS and the
words “Flight Service.” Contract facilities must
answer public access lines by stating the name of the
service provider and type.
EXAMPLE-
``Juneau Flight Service.''
``(Service Provider Name) Flight Service.''
g. Radar facilities having ASR or PAR but not
providing approach control service. State the name of
the facility followed by the letters “GCA.”
EXAMPLE-
``Chanute G-C-A.''
``Corpus Christi G-C-A.''
``Davison G-C-A.''
12-1-15. AIRCRAFT IDENTIFICATION
a. Civil. State the aircraft type, the model, the
manufacturer's name, or the prefix “November,”
followed by the numbers/letters of the aircraft
registration.
EXAMPLE-
``Bonanza One Two Three Four Tango.''
``Douglas Three Zero Five Romeo.''
``Jet Commander One Four Two Four.''
``November One Two Three Four Golf.''
NOTE-
The prefix November denotes a U.S. aircraft registry.
1. Air carrier and other civil aircraft having FAA
authorized call signs. State the call sign, in
accordance with FAAO JO 7340.2, Contractions,
followed by the flight number in group form.
EXAMPLE-
“American Five TwentyOne.”
“United One Zero One.”
“General Motors ThirtyFifteen.”
“Delta One Hundred.”
2. If aircraft identification becomes a problem,
the call sign must be restated after the flight number
of the aircraft involved.
EXAMPLE-
``American Five Twenty-One American.''
``Commuter Six Eleven Commuter.''
``General Motors Thirty-Seven General Motors.''
REFERENCE-
FAAO JO 7210.3, Para 2113, Aircraft Identification Problems
3. Air taxi and commercial operators not having
FAAauthorized call signs. State the prefix
“TANGO” on initial contact, if used by the pilot,
followed by the registration number. The prefix may
be dropped in subsequent communications.
EXAMPLE-
On initial contact.
``Tango Mooney Five Five Five Two Quebec.''
or
``Tango November Five Five Five Two Quebec.''
On subsequent contacts.
``Mooney Five Two Quebec.''
or
``November Five Two Quebec.''
b. MEDEVAC aircraft.
1. Air carrier/taxi/ambulance. State the prefix
“MEDEVAC” if used by the pilot, followed by the
call sign and flight number in group form.
EXAMPLE-
“MEDEVAC Delta FiftyOne.”
NOTE-
Use of “MEDEVAC” call sign indicates that operational
priority is requested.
2. Civilian airborne ambulance. State the word
“MEDEVAC,” followed by the numbers/letters of
the registration number.
EXAMPLE-
“MEDEVAC Two Six Four Six XRay.”
c. U.S. Military. State one of the following:
1. The service name followed by the word
“copter,” when appropriate, and the last 5 digits of the
serial number.
EXAMPLE-
EXAMPLE
“Guard Two Six Three.”
“Army Copter Three Two One Seven Six.”
“Coast Guard Six One Three Two Seven.”
“Navy Five Six Seven One Three.”
2. If aircraft identification becomes a problem
when the above procedures are used, the call sign
must be restated after the flight number of the aircraft
involved in accordance with FAA Order JO 7210.3,
Para. 2113, Aircraft Identification Problems, will
apply.
EXAMPLE-
“Army Copter Three Two One Seven Six Army Copter.”
“Coast Guard Six One Three Two Seven Coast Guard.”
3. Special military operations. State one of the
following followed the last 5 digits of the serial
number:
(a) Air evacuation flights. “AIR EVAC,”
“MARINE AIR EVAC,” or “NAVY AIR EVAC.”
EXAMPLE-
``AIR EVAC One Seven Six Five Two.''
(b) Rescue flights. (Service name)
“RESCUE.”
EXAMPLE-
“Air Force Rescue Six One Five Seven Niner.”
(c) Air Mobility Command. “REACH.”
EXAMPLE-
“Reach Seven Eight Five Six Two.”
(d) Special Air Mission. “SAM.”
EXAMPLE-
“Sam Niner One Five Six Two.”
(e) USAF Contract Aircraft. “LOGAIR.”
EXAMPLE-
“Logair Seven Five Eight Two Six.”
4. Military tactical and training.
(a) U.S. Air Force, Air National Guard,
Military District of Washington priority aircraft, and
USAF civil disturbance aircraft. Pronounceable
words of 3 to 6 letters followed by a 1 to 4 digit
number.
EXAMPLE-
“Paul Two Zero.”
“Pat One Five Seven.”
“Graydog Four.”
NOTE-
Then the “Z” suffix described in para 653, USAF/USN
Undergraduate Pilots, is added to identify aircraft piloted
by USAF/USN undergraduate pilots, the call sign will be
limited to a combination of six characters. Do not use this
suffix, however, in groundtoair communication.
(b) Navy or Marine fleet and training
command aircraft. The service name and 2 letters or
a digit and a letter (use letter phonetic equivalents)
followed by 2 or 3 digits.
EXAMPLE-
“Marine Four Charlie Two Three Six.”
“Navy Golf Alpha Two One.”
(c) NORAD interceptors. An assigned
doubleletter twodigit flight number.
EXAMPLE-
“Alpha Kilo One Five.”
(d) Navy Fleet Support Missions. When
handling Navy Fleet Support Mission aircraft, use the
words “Special Flight Number,” followed by the
number as given by the pilot.
d. Foreign registry. State one of the following:
1. Civil. State the aircraft type or the
manufacturer's name followed by the
letters/numbers of the aircraft registration, or state the
letters or digits of the aircraft registration or call sign.
EXAMPLE-
“Stationair FLRB.”
“CFLRB.”
“Canadian Foxtrot Lima Romeo Bravo.”
NOTE-
Letters may be spoken individually or phonetically.
2. Air carrier. The abbreviated name of the
operating company followed by:
(a) The letters or digits of the registration or
call sign.
EXAMPLE-
“Air France FLRLG.”
NOTE-
Letters may be spoken individually or phonetically in
accordance with the format used by the pilot.
(b) The flight number in group form, or
separate digits may be used if that is the format used
by the pilot.
EXAMPLE-
“Scandinavian Six Eight.”
“Scandinavian Sixtyeight.”
3. Foreign Military.
(a) Except for military services identified in
FAA Order JO 7340.2, Contractions, state the name
of the country and the military service followed by
the separate digits or letters of the registration or call
sign.
EXAMPLE-
“Brazilian Air Force Five Three Two Seven Six.”
“Canforce Five Six Two Seven.”
e. Presidential aircraft and Presidential family
aircraft.
1. When the President is aboard a military
aircraft, state the name of the military service
followed by the word “One.”
EXAMPLE-
“Air Force One.”
“Army One.”
“Marine One.”
2. When the President is aboard a civil aircraft,
state the words “Executive One.”
3. When a member of the President's family is
aboard any aircraft, if the U.S. Secret Service or the
White House Staff determines it is necessary, state the
words “Executive One Foxtrot.”
f. Vice Presidential aircraft.
1. When the Vice President is aboard a military
aircraft, state the name of the military service
followed by the word ”Two.”
EXAMPLE-
“Air Force Two.”
“Army Two.”
“Marine Two.”
2. When the Vice President is aboard a civil
aircraft, state the words “Executive Two.”
3. When a member of the Vice President's
family is aboard any aircraft, if the U.S. Secret
Service or the White House Staff determines it is
necessary, state the words “Executive Two Foxtrot.”
g. DOT and FAA flights. The following alphanumeric identifiers and radio/ interphone call signs are
for use in air/ground communications when the
Secretary of Transportation, Deputy Secretary of
Transportation, FAA Administrator, or FAA Deputy
Administrator have a requirement to identify
themselves:
1. Department of Transportation.
(a) Secretary:
(1) Identifier DOT1.
(2) Call Sign Transport1.
(b) Deputy Secretary:
(1) Identifier DOT2.
(2) Call Sign Transport2
2. Federal Aviation Administration.
(a) Administrator:
(1) Identifier FAA1.
(2) Call Sign Safe Air1.
(b) Deputy Administrator:
(1) Identifier FAA2
(2) Call Sign Safe Air2.
PHRASEOLOGY-
Grand Forks Radio, Transport Two, (message).
Miami Radio, Safe Air One, (message).
h. Other special flights.
1. Department of Energy flights. State the
letters “RAC” (use phonetic alphabet equivalents),
followed by the last 4 separate digits of the aircraft
registration number.
EXAMPLE-
“Romeo Alfa Charlie One Six Five Three.”
2. Semiautomatic Flight Inspections. State the
code name “SAFI,” followed by the separate digits of
the grid number as filed.
EXAMPLE-
“SAFI Five Two Seven.”
3. Flight Inspection of navigational aids. State
the call sign “Flight Check,” followed by the digits of
the registration number.
EXAMPLE-
“Flight check Three Niner Six Five Four.”
4. USAF aircraft engaged in aerial sampling
missions. State the call sign “SAMP,” followed by
the last three digits of the serial number.
EXAMPLE-
“SAMP Three One Six.”
5. United States governmental Departments or
Agencies, with a demonstrated and approved need,
have been granted special domestic/ICAO
telephonies (call signs). These items are contained in
FAA Order JO 7110.67, Special Aircraft Operations
by Federal, State Law Enforcement, Military
Organizations, and Special Activities.
i. Use a pilot's name in identification of an aircraft
only in special or emergency situations.
12-1-16. DESCRIPTION OF AIRCRAFT
TYPES
Except for heavy aircraft, describe aircraft as follows:
a. Military.
1. Military designator with number spoken in
group form; or
2. Service and type; or
3. Type only if no confusion or
misidentification is likely.
EXAMPLE-
“Air Force Bomber.”
“BOne.”
“Bomber.”
“FFifteen.”
“Fighter.”
“Navy Fighter.”
b. Air Carrier.
1. Manufacturer's name or model.
2. Add the manufacturer's name, company
name or other identifying features when confusion or
misunderstanding is likely.
EXAMPLE-
“American MD Eighty SevenThirtySeven.”
“Boeing SevenFiftySeven.”
“LTenEleven.”
c. General Aviation and Air Taxi.
1. Manufacturer's model, name, or designator.
2. Manufacturer's name, or add color when
considered advantageous.
EXAMPLE-
“Airliner.''
“Blue and White King Air.”
“Cessna FourOhOne.”
“Cessna Three Ten.”
“Green Apache.”
“PA TwentyTwo.”
“TriPacer.”
12-1-17. AIRCRAFT EQUIPMENT CODES
When communicating this information (aircraft
equipment suffixes) state the aircraft type, the word
“slant,” and the appropriate phonetic letter equivalent
of the suffix.
EXAMPLE-
“Boeing SevenOhSeven slant Romeo.”
“DC Six slant Tango.”
“FEightE slant Papa.”
“FFourC slant November.”
12-1-18. AIRWAYS AND ROUTES
Describe airways, routes, or jet routes as follows:
a. VOR/VORTAC/TACAN airways or jet routes.
State the word “Victor” or the letter “J,” followed by
the number of the airway or route in group form. For
RNAV routes, add the word “Romeo.”
EXAMPLE-
“J Eight Thirty Romeo.”
“J Five ThirtyThree.”
“Offset one zero miles right of J Eight Thirty Romeo.”
“Victor Seven Ten Romeo.”
“Victor Twelve.”
b. VOR/VORTAC/TACAN alternate airways.
State the word “Victor,” followed by the number of
the airway in group form and the alternate direction.
EXAMPLE-
“Victor Twelve South.”
c. Colored/L/MF airways. State the color of the
airway followed by the number in group form.
EXAMPLE-
“Blue EightyOne.”
d. Named Routes. State the words “North
American Route” or “Bahama Route,” followed by
the number of the route in group form.
EXAMPLE-
“North American Route Fifty.”
“Bahama Route FiftyFive Victor.”
e. Military Training Routes ( MTRs). State the
letters “IR” or “VR,” followed by the number of the
route in group form.
EXAMPLE-
“IR Five ThirtyOne.”
“VR Fiftytwo.”
12-1-19. NAVAID TERMS
a. Announce NAVAIDs as follows in
TBL 12142:
TBL 12-1-42
NAVAID Terms
Contraction
|
Phraseology
|
DME
|
DME
|
GNSS
|
Global Navigation Satellite System
|
GPS
|
Global Positioning System
|
ILS
|
ILS
|
LOM
|
Outer compass locator
|
MLS
|
MLS
|
NDB
|
Nondirectional radio beacon
|
RNAV
|
Area Navigation System
|
TACAN
|
TACKAN
|
VOR
|
VOR
|
VORTAC
|
VOR (as in “vortex”) TACK
|
WAAS
|
Wide Area Augmentation System
|
b. Describe radials, arcs, courses, bearings, and
quadrants of NAVAIDs as follows:
1. VOR/VORTAC/TACAN/MLS NAVAIDs.
State the name of the NAVAID followed by the
separate digits of the radial/azimuth (omitting the
word degrees) and the word “radial/azimuth.”
EXAMPLE-
“Appleton Zero Five Zero Radial.”
“Lindburg Runway Two Seven MLS two six zero azimuth.”
2. Arcs about VORDME/VORTAC/TACAN/MLS NAVAIDs. State the distance in miles from the
NAVAID followed by the words ``mile arc,'' the
direction from the NAVAID in terms of the eight
principal points of the compass, the word “of,” and
the name of the NAVAID.
EXAMPLE-
“Two zero mile arc southwest of O'Hare Runway Two
Seven Left MLS.”
3. Quadrant within a radius of NAVAID. State
direction from NAVAID in terms of the quadrant; e.g.
NE, SE, SW, NW, followed by the distance in miles
from the NAVAID.
EXAMPLE-
“Cleared to fly northeast quadrant of Philipsburg
VORTAC within four zero mile radius.”
REFERENCE-
P/CG Term, QUADRANT.
4. Nondirectional beacons. State the course to
or the bearing from the radio beacon, omitting the
word “degree,” followed by the words “course to” or
“bearing from,” the name of the radio beacon, and the
words “radio beacon”.
EXAMPLE-
“Three four zero bearing from Randolph Radio Beacon.”
12-1-20. NAVAID FIXES
Describe fixes determined by reference to a
radial/localizer/azimuth and distance from a
VORDME/VORTAC/TACAN/ILSDME or MLS
as follows:
a. When a fix is not named, state the name of the
NAVAID, followed by a specified
radial/localizer/azimuth, and state the distance in
miles followed by the phrase “mile fix.”
EXAMPLE-
“Appleton zero five zero radial three seven mile fix.”
“Reno localizer back course four mile fix.”
“Hobby Runway One Two MLS zero niner zero azimuth
one two mile fix.”
b. When a fix is charted on a SID, STAR, en route
chart, or approach plate, state the name of the fix
followed by the phrase “DME fix” or “waypoint,”
as appropriate.
EXAMPLE-
“Shaum DME Fix.”
“Shaum Waypoint.”
c. Use specific terms to describe a fix. Do not use
expressions such as “passing Victor Twelve” or
“passing J Eleven.”
12-1-21. RUNWAY CONDITIONS
a. State factual information as reported by airport
management concerning the condition of the runway
surface and describing the accumulation of
precipitation. Furnish quality of braking action as
received from pilots or airport management to all
aircraft as follows:
1. Describe the quality of braking action using
the terms good, fair, poor, or nil. If the pilot or airport
management reports braking action in other than the
foregoing terms, ask them to categorize braking
action in these terms.
2. Include the type of aircraft or vehicle (if
known) from which the report is received.
EXAMPLE-
“All runways covered by packed snow six inches deep.”
“Braking action poor reported by an F TwentySeven.”
3. If the braking action report affects only a
portion of a runway, obtain enough information from
the pilot or airport management to describe braking
action in terms easily understood by the pilot.
EXAMPLE-
“Braking action poor first half of runway, reported by a
Gulfstream Two.”
“Braking action poor beyond the intersection of Runway
Two Seven, reported by a Boeing Seven TwentySeven.”
NOTE-
Descriptive terms, such as first/last half of the runway,
should normally be used rather than landmark
descriptions; for example, opposite the fire station, south
of a taxiway.
b. State runway friction measurement readings/values as received from airport management to
aircraft as follows:
1. At airports with friction measuring devices,
provide runway friction reports, as received from
airport management, to pilots on request. State the
runway number followed by the MU number for each
of the three runway zones, the time of the report in
UTC, and a word describing the cause of the runway
friction problem.
EXAMPLE-
“Runway Two Seven, MU fortytwo, fortyone,
twentyeight at one zero one eight ZULU, ice.”
2. Issue the runway surface condition and/or the
runway condition reading (RCR), if provided, to all
USAF and ANG aircraft. Issue the RCR to other
aircraft upon request.
EXAMPLE-
“Ice on runway, RCR Zero Five, patchy.”
NOTE-
USAF has established RCR procedures for determining
the average deceleration readings of runways under
conditions of water, slush, ice, or snow. The use of RCR
code is dependent upon a pilot's having a “stopping
capability chart” specifically applicable to his/her
aircraft. USAF offices furnish RCR information at
airports serving USAF and ANG aircraft.
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