Estimated Time of Arrival

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Link Semantic Value
Term Estimated Time of Arrival
Status


Mandatory for


Contexts

SESAR

Categories


Synonyms


Related entries

Flight Management System (FMS)

Controlled Time of Arrival (CTA)

Target Time of Arrival (TTA)

Required Time of Arrival (RTA)

Broader term


Narrower term


Abbreviation

ETA

Definition

1. (SESAR) the time computed by the FMS for the flight arriving at a point related to the destination airport

2. (ICAO) For IFR flights, the time at which it is estimated that the aircraft will arrive over that designated point, defined by reference to navigation aids, from which it is intended that an instrument approach procedure will be commenced, or, if no navigation aid is associated with the aerodrome, the time at which the aircraft will arrive over the aerodrome.

For VFR flights, the time at which it is estimated that the aircraft will arrive over the aerodrome.

Definition Source

1. Episode 3, D2.2-049 - Detailed Operational Description - Glossary of Terms and Definitions (Lexicon), Version : 2.00

2.ICAO, Official definition, ICAO doc. 8400, Procedures for Air Navigation Services — ICAO Abbreviations and Codes (2004)

Note

When an aircraft is flying to a TTA, the FMS will still provide an estimated ETA. When an aircraft is flying to a CTA, the ETA will be replaced by the RTA.

When negotiating a CTA with the ground, the FMS provides the bounds for a feasible RTA, expressed as ETA(max)/ETA(min). (source: Episode 3)

Lexicon Release

Lexicon Release 2015.2