background image

Pilot/Controller Glossary

3/29/18

PCG A

−7

AIRMETs cover moderate icing, moderate turbu-
lence, sustained winds of 30 knots or more at the
surface, widespread areas of ceilings less than 1,000
feet and/or visibility less than 3 miles, and extensive
mountain obscurement.

(See AWW.)
(See CONVECTIVE SIGMET.)
(See CWA.)
(See SIGMET.)
(Refer to AIM.)

AIRPORT

− An area on land or water that is used or

intended to be used for the landing and takeoff of
aircraft and includes its buildings and facilities, if
any.

AIRPORT ADVISORY AREA

− The area within ten

miles of an airport without a control tower or where
the tower is not in operation, and on which a Flight
Service Station is located.

(See LOCAL AIRPORT ADVISORY.)
(Refer to AIM.)

AIRPORT ARRIVAL RATE (AAR)

− A dynamic

input parameter specifying the number of arriving
aircraft which an airport or airspace can accept from
the ARTCC per hour. The AAR is used to calculate
the desired interval between successive arrival
aircraft.

AIRPORT DEPARTURE RATE (ADR)

− A dynamic

parameter specifying the number of aircraft which
can depart an airport and the airspace can accept per
hour.

AIRPORT ELEVATION

− The highest point of an

airport’s usable runways measured in feet from mean
sea level.

(See TOUCHDOWN ZONE ELEVATION.)
(See ICAO term AERODROME ELEVATION.)

AIRPORT LIGHTING

− Various lighting aids that

may be installed on an airport. Types of airport
lighting include:

a.

Approach Light System (ALS)

− An airport

lighting facility which provides visual guidance to
landing aircraft by radiating light beams in a
directional pattern by which the pilot aligns the
aircraft with the extended centerline of the runway on
his/her final approach for landing. Condenser-
Discharge Sequential Flashing Lights/Sequenced
Flashing Lights may be installed in conjunction with

the ALS at some airports. Types of Approach Light
Systems are:

1.

ALSF-1

− Approach Light System with

Sequenced Flashing Lights in ILS Cat-I configura-
tion.

2.

ALSF-2

− Approach Light System with

Sequenced Flashing Lights in ILS Cat-II configura-
tion. The ALSF-2 may operate as an SSALR when
weather conditions permit.

3.

SSALF

− Simplified Short Approach Light

System with Sequenced Flashing Lights.

4.

SSALR

− Simplified Short Approach Light

System with Runway Alignment Indicator Lights.

5.

MALSF

− Medium Intensity Approach Light

System with Sequenced Flashing Lights.

6.

MALSR

− Medium Intensity Approach Light

System with Runway Alignment Indicator Lights.

7.

RLLS

− Runway Lead-in Light System

Consists of one or more series of flashing lights
installed at or near ground level that provides positive
visual guidance along an approach path, either
curving or straight, where special problems exist with
hazardous terrain, obstructions, or noise abatement
procedures.

8.

RAIL

− Runway Alignment Indicator Lights−

Sequenced Flashing Lights which are installed only
in combination with other light systems.

9.

ODALS

− Omnidirectional Approach Light-

ing System consists of seven omnidirectional
flashing lights located in the approach area of a
nonprecision runway. Five lights are located on the
runway centerline extended with the first light
located 300 feet from the threshold and extending at
equal intervals up to 1,500 feet from the threshold.
The other two lights are located, one on each side of
the runway threshold, at a lateral distance of 40 feet
from the runway edge, or 75 feet from the runway
edge when installed on a runway equipped with a
VASI.

(Refer to FAA Order JO 6850.2, VISUAL

GUIDANCE LIGHTING SYSTEMS.)

b.

Runway Lights/Runway Edge Lights

− Lights

having a prescribed angle of emission used to define
the lateral limits of a runway. Runway lights are
uniformly spaced at intervals of approximately 200
feet, and the intensity may be controlled or preset.

c.

Touchdown Zone Lighting

− Two rows of

transverse light bars located symmetrically about the