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function. These objects shall be constructed on low
impact resistant supports (frangible mounted structures)
to the lowest practical height with the frangible
point no higher than 3 inches above grade.
(Refer to AC 150/5300‐13, Airport Design,
Chapter 3.)
RUNWAY TRANSITIONa.
Conventional STARs/SIDs. The portion of a
STAR/SID that serves a particular runway or
runways at an airport.
b. RNAV STARs/SIDs. Defines a path(s) from
the common route to the final point(s) on a STAR. For
a SID, the common route that serves a particular
runway or runways at an airport.
RUNWAY USE PROGRAM- A noise abatement
runway selection plan designed to enhance noise
abatement efforts with regard to airport communities
for arriving and departing aircraft. These plans are
developed into runway use programs and apply to all
turbojet aircraft 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 which is 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 14 CFR Section 91.129.
b. Informal Runway Use Program- An approved
noise abatement program which does not require a
Letter of Understanding, and participation in the
program is voluntary for aircraft operators/pilots.
Pilot/Controller Glossary 2/14/08
PCG R-8
RUNWAY VISIBILITY VALUE-
(See VISIBILITY.)
RUNWAY VISUAL RANGE-
(See VISIBILITY.)
2/14/08 Pilot/Controller Glossary
PCG S-1
S
SAA-
(See SPECIAL ACTIVITY AIRSPACE.)
SAFETY ALERT- A safety alert issued by ATC to
aircraft under their control if ATC is aware the aircraft
is at an altitude which, in the controller's judgment,
places the aircraft in unsafe proximity to terrain,
obstructions, or other aircraft. The controller may
discontinue the issuance of further alerts if the pilot
advises he/she is taking action to correct the situation
or has the other aircraft in sight.
a. Terrain/Obstruction Alert- A safety alert issued
by ATC to aircraft under their control if ATC is aware
the aircraft is at an altitude which, in the controller's
judgment, places the aircraft in unsafe proximity to
terrain/obstructions; e.g., “Low Altitude Alert, check
your altitude immediately.”
b. Aircraft Conflict Alert- A safety alert issued by
ATC to aircraft under their control if ATC is aware of
an aircraft that is not under their control at an altitude
which, in the controller's judgment, places both
aircraft in unsafe proximity to each other. With the
alert, ATC will offer the pilot an alternate course of
action when feasible; e.g., “Traffic Alert, advise you
turn right heading zero niner zero or climb to eight
thousand immediately.”
Note:The issuance of a safety alert is contingent
upon the capability of the controller to have an
awareness of an unsafe condition. The course of
action provided will be predicated on other traffic
under ATC control. Once the alert is issued, it is
solely the pilot's prerogative to determine what
course of action, if any, he/she will take.
SAFETY LOGIC SYSTEM- A software enhancement
to ASDE-3, ASDE-X, and ASDE-3X, that
predicts the path of aircraft landing and/or departing,
and/or vehicular movements on runways. Visual and
aural alarms are activated when the safety logic
projects a potential collision. The Airport Movement
Area Safety System (AMASS) is a safety logic
system enhancement to the ASDE-3. The Safety
Logic System for ASDE-X and ASDE-3X is an
integral part of the software program.
SAFETY LOGIC SYSTEM ALERTSa.
ALERT- An actual situation involving two real
safety logic tracks (aircraft/aircraft, aircraft/vehicle,
or aircraft/other tangible object) that safety logic has
predicted will result in an imminent collision, based
upon the current set of Safety Logic parameters.
b. FALSE ALERT-
1. Alerts generated by one or more false
surface-radar targets that the system has interpreted
as real tracks and placed into safety logic.
　
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