Pilot/Controller Glossary

EN ROUTE DESCENT- Descent from the en route
cruising altitude which takes place along the route of
flight.
EN ROUTE HIGH ALTITUDE CHARTS-
(See AERONAUTICAL CHART.)

EN ROUTE LOW ALTITUDE CHARTS-
(See AERONAUTICAL CHART.)

EN ROUTE MINIMUM SAFE ALTITUDE WARN
ING (E-MSAW)- 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 TRANSITION-
(See SEGMENTS OF A SID/STAR.)

EN ROUTE TRANSITION WAYPOINT
(See SEGMENTS OF A SID/STAR.)

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 au thorized instrument approaches,
ATC procedures, surveillance, and communication
requirements 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 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.

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ESTIMATED TIME EN ROUTE- The estimated
flying time from departure point to destination
(liftoff 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 twoway
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.)

ESTIMATED ELAPSED TIME [ICAO]- The
estimated time required to proceed from one
significant point to another.

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

(See ICAO Term TOTAL ESTIMATED ELAPSED
TIME.)

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.

ESTIMATED OFFBLOCK TIME [ICAO]- The
estimated time at which the aircraft will commence
movement associated with departure.