Section 8. Runway Visibility Reporting- Terminal
2-8-1. FURNISH RVR/RVV VALUES
Where RVR or RVV equipment is operational,
irrespective of subsequent operation or nonoperation
of navigational or visual aids for the application of
RVR/RVV as a takeoff or landing minima, furnish the
values for the runway in use in accordance with
para 2-8-3, Terminology.
NOTE-
Readout capability of different type/model RVR equipment
varies. For example, older equipment minimum readout
value is 600 feet. Newer equipment may have minimum
readout capability as low as 100 feet. Readout value
increments also may differ. Older equipment have
minimum readout increments of 200 feet. New equipment
increments below 800 feet are 100 feet.
REFERENCE-
FAAO 6560.10, Runway Visual Range (RVR).
FAAO 6750.24, Instrument Landing System (ILS) and Ancillary
Electronic Component Configuration & Perf. Req.
2-8-2. ARRIVAL/DEPARTURE RUNWAY
VISIBILITY
a. Issue current touchdown RVR/RVV for the
runway(s) in use:
1. When prevailing visibility is 1 mile or less
regardless of the value indicated.
2. When RVR/RVV indicates a reportable value
regardless of the prevailing visibility.
NOTE-
Reportable values are: RVR 6,000 feet or less;
RVV 11/2 miles or less.
3. When it is determined from a reliable source
that the indicated RVR value differs by more than
400 feet from the actual conditions within the area of
the transmissometer, the RVR data is not acceptable
and shall not be reported.
NOTE-
A reliable source is considered to be a certified weather
observer, automated weather observing system, air traffic
controller, flight service specialist, or pilot.
4. When the observer has reliable reports, or has
otherwise determined that the instrument values are
not representative of the associated runway, the data
shall not be used.
b. Issue both mid-point and roll-out RVR when the
value of either is less than 2,000 feet and the
touchdown RVR is greater than the mid-point or
roll-out RVR.
c. Local control shall issue the current RVR/RVV
to each aircraft prior to landing or departure in
accordance with subparas a and b.
2-8-3. TERMINOLOGY
a. Provide RVR/RVV information by stating the
runway, the abbreviation RVR/RVV, and the
indicated value. When issued along with other
weather elements, transmit these values in the normal
sequence used for weather reporting.
EXAMPLE-
"Runway One Four RVR Two Thousand Four Hundred."
"Runway Three Two RVV Three Quarters."
b. When two or more RVR systems serve the
runway in use, report the indicated values for the
different systems in terms of touchdown, mid, and
rollout as appropriate.
EXAMPLE-
"Runway Two Two Left RVR Two Thousand, rollout
One Thousand Eight Hundred."
"Runway Two Seven Right RVR One Thousand,
mid Eight Hundred, rollout Six Hundred."
c. 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.
EXAMPLE-
"Runway Three Six RVR more than Six Thousand."
"Runway Niner RVR One Thousand, rollout less than
Six Hundred."
d. When a readout indicates a rapidly varying
visibility condition (1,000 feet or more for RVR; one
or more reportable values for RVV), report the
current value followed by the range of visibility
variance.
EXAMPLE-
"Runway Two Four RVR Two Thousand, variable
One Thousand Six Hundred to Three Thousand."
"Runway Three One RVV Three-quarters, variable
One-quarter to One."
REFERENCE-
FAAO JO 7110.65, Para 2-8-1, Furnish RVR/RVV Values.
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