Pilot/Controller Glossary

4/3/14

PCG E−1

E

EAS−

(See EN ROUTE AUTOMATION SYSTEM.)

EDCT−

(See EXPECT DEPARTURE CLEARANCE

TIME.)

EFC−

(See EXPECT FURTHER CLEARANCE (TIME).)

ELT−

(See EMERGENCY LOCATOR TRANSMITTER.)

EMERGENCY

− A distress or an urgency condition.

EMERGENCY LOCATOR TRANSMITTER− A

radio transmitter attached to the aircraft structure

which operates from its own power source on

121.5 MHz  and  243.0 MHz.  It  aids  in  locating

downed aircraft by radiating a downward sweeping

audio tone, 2-4 times per second. It is designed to

function without human action after an accident.

(Refer to 14 CFR Part 91.)
(Refer to AIM.)

E-MSAW−

(See EN ROUTE MINIMUM SAFE ALTITUDE

WARNING.)

EN ROUTE AIR TRAFFIC CONTROL SER-

VICES− Air traffic control service provided aircraft

on IFR flight plans, generally by centers, when these

aircraft are operating between departure and

destination terminal areas. When equipment, capa-

bilities, and controller workload permit, certain

advisory/assistance services may be provided to VFR

aircraft.

(See AIR ROUTE TRAFFIC CONTROL

CENTER.)

(Refer to AIM.)

EN ROUTE AUTOMATION SYSTEM (EAS)− The

complex integrated environment consisting of

situation display systems, surveillance systems and

flight data processing, remote devices, decision

support tools, and the related communications

equipment that form the heart of the automated IFR

air traffic control system. It interfaces with automated

terminal systems and is used in the control of en route

IFR aircraft.

(Refer to AIM.)

EN ROUTE CHARTS−

(See AERONAUTICAL CHART.)

EN ROUTE DESCENT− Descent from the en route

cruising altitude which takes place along the route of

flight.
EN ROUTE FLIGHT ADVISORY SERVICE−  A

service specifically designed to provide, upon pilot

request, timely weather information pertinent to

his/her type of flight, intended route of flight, and

altitude. The FSSs providing this service are listed in

the Airport/Facility Directory.

(See FLIGHT WATCH.)
(Refer to AIM.)

EN ROUTE HIGH ALTITUDE CHARTS−

(See AERONAUTICAL CHART.)

EN ROUTE LOW ALTITUDE CHARTS−

(See AERONAUTICAL CHART.)

EN ROUTE MINIMUM SAFE ALTITUDE WARN-

ING− A function of the EAS that aids the controller

by providing an alert when a tracked aircraft is below

or predicted by the computer to go below a

predetermined minimum IFR altitude (MIA).
EN ROUTE SPACING PROGRAM (ESP)−  A

program designed to assist the exit sector in

achieving the required in-trail spacing.
EN ROUTE TRANSITION−

a.

Conventional STARs/SIDs. The portion of a

SID/STAR that connects to one or more en route

airway/jet route.

b.

RNAV STARs/SIDs. The portion of a STAR

preceding the common route or point, or for a SID the

portion following, that is coded for a specific en route

fix, airway or jet route.
ESP−

(See EN ROUTE SPACING PROGRAM.)

ESTABLISHED−To be stable or fixed on a route,

route segment, altitude, heading, etc.
ESTIMATED ELAPSED TIME [ICAO]− The

estimated time required to proceed from one

significant point to another.

(See ICAO Term TOTAL ESTIMATED ELAPSED

TIME.)