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Pilot/Controller Glossary

3/29/18

PCG L−1

L

LAA−

(See LOCAL AIRPORT ADVISORY.)

LAAS−

(See LOW ALTITUDE ALERT SYSTEM.)

LAHSO− An acronym for “Land and Hold Short

Operation.” These operations include landing and

holding short of an intersecting runway, a taxiway, a

predetermined point, or an approach/departure

flightpath.

LAHSO-DRY− Land and hold short operations on

runways that are dry.

LAHSO-WET− Land and hold short operations on

runways that are wet (but not contaminated).

LAND AND HOLD SHORT OPERATIONS−

Operations which include simultaneous takeoffs and

landings and/or simultaneous landings when a

landing aircraft is able and is instructed by the

controller to hold-short of the intersecting runway/

taxiway or designated hold-short point. Pilots are

expected to promptly inform the controller if the hold

short clearance cannot be accepted.

(See PARALLEL RUNWAYS.)
(Refer to AIM.)

LAND−BASED AIR DEFENSE IDENTIFICA-

TION ZONE (ADIZ)− An  ADIZ  over U.S.

metropolitan areas, which is activated and deactivat-

ed as needed, with dimensions, activation dates, and

other relevant information disseminated via NO-

TAM.

(See AIR DEFENSE IDENTIFICATION ZONE.)

LANDING AREA− Any locality either on land,

water, or structures, including airports/heliports and

intermediate landing fields, which is used, or

intended to be used, for the landing and takeoff of

aircraft whether or not facilities are provided for the

shelter, servicing, or for receiving or discharging

passengers or cargo.

(See ICAO term LANDING AREA.)

LANDING AREA [ICAO]− That part of a movement

area intended for the landing or take-off of aircraft.

LANDING DIRECTION INDICATOR− A device

which visually indicates the direction in which

landings and takeoffs should be made.

(See TETRAHEDRON.)
(Refer to AIM.)

LANDING DISTANCE AVAILABLE (LDA)− The

runway length declared available and suitable for a

landing airplane.

(See ICAO term LANDING DISTANCE

AVAILABLE.)

LANDING DISTANCE AVAILABLE [ICAO]− The

length of runway which is declared available and

suitable for the ground run of an aeroplane landing.
LANDING MINIMUMS− The minimum visibility

prescribed for landing a civil aircraft while using an

instrument approach procedure. The minimum

applies with other limitations set forth in 14 CFR

Part 91  with  respect  to  the  Minimum  Descent

Altitude (MDA) or Decision Height (DH) prescribed

in the instrument approach procedures as follows:

a. Straight-in landing minimums. A statement of

MDA and visibility, or DH and visibility, required for

a straight-in landing on a specified runway, or

b. Circling minimums. A statement of MDA and

visibility required for the circle-to-land maneuver.

Note: Descent below the MDA or DH must meet the

conditions stated in 14 CFR Section 91.175.

(See CIRCLE-TO-LAND MANEUVER.)
(See DECISION HEIGHT.)
(See INSTRUMENT APPROACH

PROCEDURE.)

(See MINIMUM DESCENT ALTITUDE.)
(See STRAIGHT-IN LANDING.)
(See VISIBILITY.)
(Refer to 14 CFR Part 91.)

LANDING ROLL− The distance from the point of

touchdown to the point where the aircraft can be

brought to a stop or exit the runway.
LANDING SEQUENCE− The  order  in which

aircraft are positioned for landing.

(See APPROACH SEQUENCE.)

LAST ASSIGNED ALTITUDE− The last altitude/

flight level assigned by ATC and acknowledged by

the pilot.

(See MAINTAIN.)
(Refer to 14 CFR Part 91.)