the Aviation Dictionary

runway temperature rust
overshoot, or excursion from the runway. The
dimensions of the RSA vary and can be determined by
using the criteria contained within Advisory Circular
15015300-13, Chapter 3. The design standards dictate
that the RSA shall be:
the runway from the approach end. It is based on the
sighting of either high intensity runway lights or on the
visual contrast of other targets whichever yields the
greater visual range. RVR, in contrast to prevailing or
runway visibility, is based on what a pilot in a moving
a. Cleared, graded, and have no potentially hazardous
ruts, humps, depressions, or other surface variations;
aircraft should see looking down the runway. RVR is
horizontal visual range, not slant visual range. It is
b. Drained by grading or storm sewers to prevent
water accumulation;
based on the measurement of a transmissometer made
near the touchdown point of the instrument runway and
c. Capable, under dry conditions, of supporting snow
removal equipment, aircraft rescue and fire fighting
equipment, and the occasional passage of aircraft
is reported in hundreds of feet. RVR is used in lieu of
RW and/or prevailing visibility in determining
minimums for a particular runway.
without causing structural damage to the aircraft; and, a. Touchdown RVR - The RVR visibility readout
d. Free of objects, except for objects that need to be
located in the runway safety area because of their
values obtained from RVR equipment serving the
runway touchdown zone.
function. These objects shall be constructed on low b. Mid RVR - The RVR readout values obtained
impact resistant supports (frangible mounted from RVR equipment located midfield of the runway.
structures) to the lowest practical height with the c. Rollout RVR - The RVR readout values obtained
frangible point no higher than 3 inches above grade.
from RVR equipment located nearest the rollout end of
runway temperature - The air temperature
the runway.
immediately above a runway at approximately wing runway visual range (RVR) - An instrumentally
level.
derived horizontal distance a pilot should see down the
runway from the approach end; based on the sighting
runway use program - A noise abatement runway
of high intensity runway lights.
selection plan designed to enhance noise abatement
efforts with regard to airport communities for arriving rust - A reddish brown, crusty coating of hydrated ferric
and departing aircraft. These plans are developed into oxide that forms on iron and iron-containing materials
runway use programs and apply to all turbojet aircraft when the material is exposed to moist air.
12,500 pounds or heavier; turbojet aircraft less than
12,500 pounds are included only if the airport
proprietor determines that the aircraft creates a noise
problem. Runway use programs are coordinated with
FAA offices, and safety criteria used in these programs
are developed by the Office of Flight Operations.
Runway use programs are administered by the Air
Traffic Service as "Formal" or "Informal" programs.
a. Formal Runway Use Program - An approved
noise abatement program defined and acknowledged in
a Letter of Understanding between Flight Operations,
Air Traffic Service, the airport proprietor, and the
users. Once established, participation in the program is
mandatory for aircraft operators and pilots as provided
for in FAR 91.129.
b. Informal Runway Use Program - An approved
noise abatement program that does not require a Letter
of Understanding, and participation in the program is
voluntary for aircraft operatorslpilots.
runway visibility value (RW) - The visibility
determined for a particular runway by a
transmissometer. A meter provides a continuous
indication of the visibility (reported in miles or
fractions of miles) for the runway. RVV is used in lieu
of prevailing visibility in determining minimums for a
particular runway.
runway visual range (RVR) - An instrumentally
derived value, based on standard calibrations, that
represents the horizontal distance a pilot will see down
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