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 SERVICES
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, capabilities, 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 WARNING
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.

ERAM. PT
(See PROCEDURE TURN.)

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.)

ESTIMATED POSITION ERROR (EPE)
(See Required Navigation Performance)

ESTIMATED TIME EN ROUTE
The estimated flying time from departure point to destination (lift-off to touchdown).

ESTIMATED TIME OF ARRIVAL
The time the flight is estimated to arrive at the gate (scheduled operators) or the actual runway on times for nonscheduled operators.

ETA
(See ESTIMATED TIME OF ARRIVAL.)

ETE
(See ESTIMATED TIME EN ROUTE.)

EXECUTE MISSED APPROACH
Instructions issued to a pilot making an instrument approach which means continue inbound to the missed approach point and execute the missed approach procedure as described on the Instrument Approach Procedure Chart or as previously assigned by ATC. The pilot may climb immediately to the altitude specified in the missed approach procedure upon making a missed approach. No turns should be initiated prior to reaching the missed approach point. When conducting an ASR or PAR approach, execute the assigned missed approach procedure immediately upon receiving instructions to “execute missed approach.” (Refer to AIM.)

EXPECT (ALTITUDE) AT (TIME) or EXPECT DEPARTURE CLEARANCE TIME (EDCT)
The runway release time assigned to an aircraft in a traffic management program and shown on the flight progress strip as an EDCT. (See GROUND DELAY PROGRAM.)

EXPECT FURTHER CLEARANCE (TIME)
Used by ATC to inform a pilot when an accurate estimate of the delay time and the reason for the delay cannot immediately be determined; e.g., a disabled aircraft on the runway, terminal or center area saturation, weather below landing minimums, etc. (See EXPECT FURTHER CLEARANCE (TIME).)

EXPECT FURTHER CLEARANCE (TIME)
The time a pilot can expect to receive clearance beyond a clearance limit.

EXPECT FURTHER CLEARANCE VIA (AIRWAYS, ROUTES OR FIXES)
Used to inform a pilot of the routing he/she can expect if any part of the route beyond a short range clearance limit differs from that filed.

EXPEDITE
Used by ATC when prompt compliance is required to avoid the development of an imminent situation. Expedite climb/descent normally indicates to a pilot that the approximate best rate of climb/descent should be used without requiring an exceptional change in aircraft handling characteristics.