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Pilot/Controller Glossary

3/29/18

PCG E−2

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.)

EST−

(See ESTIMATED.)

ESTABLISHED− To be stable or fixed at an altitude

or on a course, route, route segment, heading,

instrument approach or departure procedure, etc.

ESTABLISHED ON RNP (EoR) CONCEPT– A

system of authorized instrument approaches, ATC

procedures, surveillance, and communication re-

quirements that allow aircraft operations to be safely

conducted with approved reduced separation criteria

once aircraft are established on a PBN segment of a

published instrument flight procedure.

ESTIMATED (EST)−When used in NOTAMs

“EST” is a contraction that is used by the issuing

authority only when the condition is expected to

return to service prior to the expiration time. Using

“EST” lets the user know that this NOTAM has the

possibility of returning to service earlier than the

expiration time. Any NOTAM which includes an

“EST” will be auto−expired at the designated

expiration time.

ESTIMATED ELAPSED TIME [ICAO]− The

estimated time required to proceed from one

significant point to another.

(See ICAO Term TOTAL ESTIMATED ELAPSED

TIME.)

ESTIMATED OFF-BLOCK TIME [ICAO]− The

estimated time at which the aircraft will commence

movement associated with departure.

ESTIMATED POSITION ERROR (EPE)−

(See Required Navigation Performance)

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.

ESTIMATED TIME EN ROUTE− The estimated

flying time from departure point to destination

(lift-off to touchdown).
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 (FIX)− Used

under certain conditions to provide a pilot with an

altitude to be used in the event of two-way

communications failure. It also provides altitude

information to assist the pilot in planning.

(Refer to AIM.)

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)− The

time a pilot can expect to receive clearance beyond a

clearance limit.
EXPECT FURTHER CLEARANCE VIA (AIR-

WAYS, 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 com-

pliance is required to avoid the development of an

imminent situation. Expedite climb/descent normal-

ly indicates to a pilot that the approximate best rate

of climb/descent should be used without requiring an

exceptional change in aircraft handling characteris-

tics.

Pilot/Controller Glossary

9/13/18