Acronyms

The list of acronyms is available for download.

Acronym

Definition

Explanation

AA

“ATC Activated”, Actual Airborne

FUM status

AAI

Airport Authority Interface

 

a/c

Aircraft

 

ACARS

Aircraft Communications Addressing and Reporting System

 

ACC

Area Control Centre

 

A-CDM

Airport Collaborative Decision Making

 

ACIS

Airport CDM Information Sharing

 

ACISP

Airport CDM Information Sharing Platform

 

ACH

ATC flight plan Change Message

 

ACK

Acknowledgement message

 

ACZT

Actual Commencement of De-icing Time

The time when de-icing operations on an aircraft starts

ADB

Actual Deicing Begin

A-CDM@FRA process status

ADE

Actual Deicing End

A-CDM@FRA process status

ADEP

Aerodrome of Departure

 

ADES

Aerodrome of Destination

 

ADEXP

ATS Data Exchange Presentation

ADEXP provides a format for use primarily in on-line, computer to computer message exchange. ADEXP is a format, not a protocol.

ADIT

Actual De-icing Time

Metric AEZT – ACZT

ADP

ATC-DPI sended to NMOC

A-CDM@FRA process status

A-DPI

ATC-Departure Planning Information message

DPI message sent by the CDM Airport to the NMOC (ETFMS) notifying the TTOT between ATC time of pre-departure sequencing and ATOT

AEBT

Actual End Boarding Time

End of Boarding process

AEGT

Actual End of Ground handling Time

The time when ground handling  on an aircraft ends, can be equal to ARDT (TBD locally)

AEZT

Actual End of De-icing Time

The time when de-icing operations on an aircraft end

AFTN

Aeronautical Fixed Telecommunication Network

 

AGHT

Actual Ground Handling Time

The total duration of the ground handling of the aircraft. Metric ACGT - AEGT

AIBT

Actual In-Block Time

The time that an aircraft arrives in-blocks. (Equivalent to Airline/Handler ATA –Actual Time of Arrival, ACARS = IN).

AIP

Aeronautical Information Puplication

 

ALDT

Actual Landing Time

The time that an aircraft lands on a runway. (Equivalent to ATC ATA –Actual Time of Arrival = landing, ACARS=ON).

ALU

Lining Up

A-CDM@FRA process status

ALUT

Actual Line Up Time

The time that an aircraft receives its line up clearance.

AMAN

Arrival Manager

An arrival flow management tool that optimises the traffic flow nto a TMA and/or runway(s) by calculating TLDT (Target LanDing Time) taking various constraints and preferences into account

ANSP

Air Navigation Service Provider

An organisation responsible for management of flight traffic on behalf of a company, region or country.

AO

Aircraft Operator

A person, organisation or enterprise en aged in or offering to engage in an aircraft operation. (ICAO Doc 4444, Chapter 1)

AOBT

Actual Off-Block Time

Time the aircraft pushes back / vacates the parking position. (Equivalent to Airline / Handlers ATD – Actual Time of Departure & ACARS=OUT)

AOC

Airport Operator Committee

 

AODB

Airport Operational Data Base

System INFOplus

AORT

Actual Off-Block Request Time

 

AOT

Automatically generated TOBT

A-CDM@FRA process status

APR

Apron Responsibility

Aircraft in the responsibility of Frankfurt Apron.

ARCID

Aircraft Identification

 

ARCTYP

Aircraft Type

 

ARDT

Actual Ready Time (for Movement)

When the aircraft is ready for start up/push back or taxi immediately after clearance delivery, meeting the requirements set by the TOBT definition.

ARR

Arrival

Inbound flight

ARZT

Actual Ready for De-icing Time

The time when the aircraft is ready to be de-iced

ASAT

Actual Start Up Approval Time

Time that an aircraft receives its start up approval.
Note: the moment the start up approval is given can be in advance of the TSAT

ASBT

Actual Start Boarding Time

Time passengers are entering the bridge or bus to the aircraft

ASGT

Actual Start Gate Time

Begin of Gate handling

A-SMGCS

Advanced Surface Movement Guidance and Control System

System at airports having a surveillance infrastructure consisting of a Non-Cooperative Surveillance (e.g. SMR, Microwave Sensors, Optical Sensors etc) and Cooperative Surveillance (e.g. Multi-lateration systems)

ASRT

Actual Start Up Request Time

Time the pilot requests start up clearance.

ATBT

Actual Taxi Begin Time

 

ATC

Air Traffic Control

Service provided by ground-based controllers who direct aircraft on the ground and in the air. This to separate, organise and expedite the flow of air traffic.

ATDF

Actual Time over Departure Fix

 

ATFCM

Air Traffic Flow and Capacity Management

ATFM extended to the optimisation of traffic patterns and capacity management. Through managing the balance of capacity and demand the aim of ATFCM is to enable flight punctuality and efficiency according to the available resources with the emphasis on optimising the network capacity through Collaborative DecisionMaking process. (NMOC Handbook TFCM_Operating_Procedures_for_FMP_1.0) 

ATFM

Air Traffic Flow Management

A service established with the objective of contributing to a safe, orderly and expeditious flow of air traffic by ensuring that air traffic control capacity is utilised to the maximum extent possible, and that the traffic volume is compatible with the capacities declared by the appropriate Air Traffic Services authority (ICAO Annex 11, Chapter 1)

ATM

Air Traffic Management

Management of the demand for, and the use of airspace

ATOF

Actual Time over Departure Fix

 

ATOT

Actual Take Off Time

The time that an aircraft takes off from the runway. (Equivalent to ATC ATD–Actual Time of Departure, ACARS = OFF).

ATS

Air Traffic Services

The service provided by Air Traffic Controllers working at airports for the arrival and departure flight phases and in Air Traffic Control Centres for the en route flight phase

ATSP

Air Traffic Service Provider

 

ATTT

Actual Turn-round Time

Metric AOBT – AIBT

AVDGS

Automatic Visual Docking Guidance System

Ramp Display

AXIT

Actual Taxi-In Time

Metric AIBT – ALDT

AXOT

Actual Taxi-Out Time

Metric ATOT – AOBT

Acronym

Definition

Explanation

BA

Betriebsanweisung Fraport

 

BAFVK

Betriebsanweisung Flugverkehrskontrolle

 

BAO

Betriebsanordnung ATC

 

BEST

BEtriebSTeuerung

Handling System of Lufthansa

BGB

Begin of Boarding

A-CDM@FRA process status

BGT

Begin of Gate Handling

A-CDM@FRA process status

Acronym

Definition

Explanation

CBA

Cost-Benefit Analysis

A formal discipline used to help appraise, or assess, the case for a project or proposal. This is achieved by weighing the total expected costs against the total expected benefits of one or more actions in order to choose the best or most profitable option.

CDAC

CDM in Adverse Conditions

 

CDB

Central Data Base

 

CDM

Collaborative Decision Making

 

CDM
AIRPORT

CDM Airport

An airport is considered as a CDM AIRPORT when the Airport CDM Information Sharing, Turn-round process (Milestones Approach) and Variable Taxi Time Calculation Elements are applied at the Airport

CDP

C-DPI sended to NMOC

A-CDM@FRA process status

C-DPI

Cancel – Departure Planning Information message

This message informs the NMOC that previously sent DPI is no longer valid.

CFMU

(now called NMOC)

 

CHG

Modification message

Standard message sent to NMOC to change flight plan data.

CLR

Flightplan in clearing process

A-CDM@FRA process status

CNL

Flight Plan Cancellation

Standard message sent to NMOC to cancel flight plan.

COFU

Collaborative Management of Flight Updates

 

CPDS

Collaborative Pre-Departure Sequence

 

CSA

Common Situational Awareness

 

CSA-Tool

System to Input TOBT for AO/GH

 

CTOT

Calculated Take Off Time

A time calculated and issued by the appropriate Central Management unit, as a result of tactical slot allocation, at which a flight is expected to become airborne. (ICAO Doc7030/4 – EUR, Table 7)

CTRP

CDM Turn-Round Process

 

Acronym

Definition

Explanation

DAS-FRA

Datenaustauschsystem

System of Lufthansa for internal and external (e.g. Fraport) data exchange

DCL

Departure Clearance (Data link)

 

DCR

Deicing Company Ready

A-CDM@FRA process status

DCS

Departure Control System

 

DEP

Departure

Outbound flight.

DES

De-suspension message

 

DFS

Deutsche Flugsicherung GmbH

German ATC Provider

DGA

Digitale Gateansage

Self explaining

DGS

Docking Guidance System

 

DIR

Deicing Requested

A-CDM@FRA process status

DIV

Diverted

A-CDM@FRA process status

DLA

Delay message

Standard message sent to NMOC to delay flight plan OBT.

DMAN

Departure Manager

DMAN is a planning system to improve the departure flows at an airport by calculating the Target Take Off Time (TTOT) and Target Start up Approval Time (TSAT) for each flight, taking multiple constraints and preferences into account.

DOP

(Bridge-) Driver on Position

A-CDM@FRA process status

DPD

De-icing Pad

De-icing pad or other area on the apron for the use of de-icing

DPI

Departure Planning Information message

Message from Airport to NMOC. See also A-DPI, C-DPI, E-DPI, T-DPI

DVA

Deicing Vehicle allocated

A-CDM@FRA process status

DVP

Deicing Vehicle on position

A-CDM@FRA process status

Acronym

Definition

Explanation

ECZT

Estimated Commencement of De-icing Time

The estimated time when de-icing operations on an aircraft are expected to start.

EDDF

Airport Frankfurt Main

ICAO Location Indicator

EDIT

Estimated De-icing Time

Metric EEZT – ECZT.

EDP

E-DPI sended to NMOC

A-CDM@FRA process status

E-DPI

Early – Departure Planning Information message

First DPI message is sent from -3 hrs and before the T-DPI message by the CDM AIRPORT to the NMOC (ETFMS) notifying the ETOT. Also first DPI sent after ATC flight plan Cancellation.

EET

Estimated Elapsed Time

The estimated time required to proceed from one significant point to another (ICAO).

EEZT

Estimated End of De-icing Time

The estimated time when de-icing operations on an aircraft are expected to end.

EFD

Eurocontrol Flight Data Message

Delivers the data for the FUM which is established in Stanly_CDM

EGT

End of Gate Handling

A-CDM@FRA process status

EIBT

Estimated In-Block Time

The estimated time that an aircraft will arrive in-blocks. (Equivalent to Airline/Handler ETA–Estimated Time of Arrival).

ELDT

Estimated Landing Time

The estimated time that an aircraft will touch down on the runway. (Equivalent to ATC ETA–Estimated Time of Arrival = landing).

ENB

End of Boarding

A-CDM@FRA process status

EOBD

Estimated Off-Block Date

The estimated date at which the aircraft will commence movement associated with departure (ICAO).

EOBT

Estimated Off-Block Time

The estimated time at which the aircraft will start movement associated with departure(ICAO).

ERR

Error Message

 

ERZT

Estimated Ready for De-icing Time

The estimated time when the aircraft is ex pected to be ready for de-icing operations

ETDF

Estimated Time over Departure Fix

 

ETFMS

Enhanced Tactical Flow Management System

ETFMS receives radar derived data provided by the Air Navigation Service Providers(ANSPs), position report data provided by the Aircraft Operators and meteorological data. ETFMS uses this data to update the existing data coming from flight plans and flow measures.

ETOF

Estimated Time over Fix

 

ETOT

Estimated Take Off Time

The estimated take off time taking into account the EOBT plus EXOT.

ETTT

Estimated Turn-round Time

The time estimated by the AO/GH on the day of operation to turn-round a flight taking into account the operational constraints.

Eurocat-C

System zur Luftlagedarstellung

 

EXIT

Estimated Taxi-In Time

The estimated taxi time between landing and in-block.

EXOT

Estimated Taxi-Out Time

The estimated taxi time between off-block and take off. This estimate includes any delay buffer time at the holding point or remote de-icing prior to take off.

Acronym

Definition

Explanation

FBO

Flughafenbenutzungsordnung

Airport User Regulation

FDPS

Flight Data Processing System

Fraport system used for Airside Operations

FFU

Flugfunktion

Fraport Flugdatenattribut (Flight data attributes)

FG

Functional Group

 

FIDS

Flight Information Display System

 

FIR

Flight Information Region

 

FLS

Flight Suspension message

Standard message sent from NMOC to suspend flight plan OBT

FLT

Flight

 

FMP

Flow Management Position

Provides a vital flow of information from their operational ATC Unit to the NMOC about the current situation within their ACC and the operational situation at the airport.

FPL

Filed Flight Plan

ICAO derived flight plan

FRA

Frankfurt Airport

IATA 3 Letter Code

FRD

Functional Requirements Document

This document specifies the minimum set of requirements to implement Airport CDM

FSA

First System Activation

 

FUM

Flight Update Message

A message sent from the NMOC to a CDM Airport providing an ELDT, ETO and flight level at the last point of route.

Acronym

Definition

Explanation

GAT

General Air Traffic

 

GAT

General Aviation Terminal

 

GH

Ground Handler

Company responsible for handling of aircraft during turn-round at the airport.

GHD

Ground Handler Responsibility

Aircraft in the responsibility of ground handler (between On-Block and Off-Block)

GHE

Groundhandling End

A-CDM@FRA process status

Acronym

Definition

Explanation

HMI

Human-Machine Interface

The aggregate of means by which people— the users - interact with the system - a particular machine, device, computer program or other complex tools.

HOT

Handover to Tower

 

HOT

Hold Over Time

 

Acronym

Definition

Explanation

ICAO

International Civil Aviation Organisation

 

ICP

Deicing on Stand

A-CDM@FRA process status

ICR

Deicing on pad

A-CDM@FRA process status

IDF-List

Inactiv departure flight-List

Internal list of FDPS system

IFPS

Integrated Initial Flight Plan Processing System

A system of the NMOC designed to rationalize the reception, initial processing and distribution of IFR/GAT flight plan data related to IFR flight within the area covered by the participating States. (ICAO Doc 7030/4 – EUR, paragraph 3.1.1 new)

IFR

Instrument Flight Rules

 

Acronym

Definition

Explanation

KPI

Key Performance Indicator

 

Acronym

Definition

Explanation

LAN

Landed

A-CDM@FRA process status

LoA

Letter of Agreement

 

LVP

Low Visibility Procedures

 

Acronym

Definition

Explanation

MACS

Multi Access Control System

System for the use of gate and boarding handling

MAP

Missed Approach

A-CDM@FRA process status

MDI

Minimum Departure Interval

 

MOT

Manually entered TOBT

A-CDM@FRA process status

MoU

Memorandum of Understanding

 

MST

Milestone

 

MTTT

Minimum Turn-round Time

The minimum turn-round time agreed with an AO/GH for a specified flight or aircraft type.

MVT

Movement message

Standardized IATA format message, sent via SITA to destination airport, AO and other recipients, containing departure data of a flight

Acronym

Definition

Explanation

NOI

Deicing cancelled (no Deicing)

A-CDM@FRA process status

NMOC

Network Manager Operations Centre (formerly known as CFMU)

Network Manager Operations Centre (NMOC), Brussels – A Central Management Unit operated by EUROCONTROL. (ICAO Doc7754, Volume I, Part V.III, paragraph 3)

Acronym

Definition

Explanation

OAT

Operational Air Traffic

 

OBR

Off-Block Request

A-CDM@FRA process status

OCD

Operational Concept Document

 

OFB

Off-Block

A-CDM@FRA process status

OFR

Off-Block for Remote Holding

A-CDM@FRA process status

ONB

On Block

A-CDM@FRA process status

ORGN

Originator

 

Acronym

Definition

Explanation

PAX

Passengers

 

PBG

Push Back Given

A-CDM@FRA process status

PBR

Push Back Requested

A-CDM@FRA process status

PIC

Pilot In Command

 

PL

Platzlotse

Air Traffic Controller on the Tower

PMP

Project Management Plan

 

POS

Parkingposition

 

Acronym

Definition

Explanation

RDY

Aircraft Ready

A-CDM@FRA process status

REA

Ready message

 

REG

Aircraft Registration

 

REJ

Rejection message

 

RFO

Remote Off Block

A-CDM@FRA process status

RFP

Replacement Flight Plan

 

RIBT

Remote In-Block Time

The time that an aircraft arrives at its parking position for remote holding.

RMH

Remote Holding

 

RMS

Ressource Management System

Fraport Ressource Management System for allocation of Positions and Gates

RNB

Remote On Block

A-CDM@FRA process status

ROBT

Remote Off-Block Time

The time that an aircraft leaves its parking position for remote holding.

RPL

Repetitive ATC flight plan

 

RTOT

Requested Take Off Time

Time the AO wants to depart (TOBT + EXOT)

RTS

Return to Stand

 

RWY

Runway

 

Acronym

Definition

Explanation

SAM

Slot Allocation Message

 

SBY

Standby

A-CDM@FRA process status

SCZT

Sequenced Commencement of Deicing Time

Time calculated by sequencer system

SEQ

Sequenced

A-CDM@FRA process status

SES

S-East-Sierra Verfahren

 

SGT

Standard Ground Time

 

SIBT

Scheduled In-Block Time

The time that an aircraft is scheduled to arrive at its parking position.

SID

Standard Instrument Departure

Published flight procedures followed by aircraft on an IFR flight plan immediately after take off from an airport.

SIT1

NMOC Slot Issue Time

The time when the NMOC issues the SAM(Slot Allocation Message). This is normally two hours before EOBT.

SITA

Société Internationale de Télécommunication Aéronautique

 

SLA

Service Level Agreement

 

SLC

Slot Cancellation message

Standard message from NMOC sent when flight regulations are canceled

SMS

Short Message Service

Via Cellphone

SOBT

Scheduled Off-Block Time

The time that an aircraft is scheduled to depart from its parking position.

SRE

Sammelraum

Fraport Data for Gate

SRM

Slot Revision Message

Standard message from NMOC sent when flight regulations are revised

SSR

Secondary Surveillance Radar

 

STAR

Standard Arrival Route

 

STD

Scheduled Time of Departure

 

STOT

Sequenced Take Off Time

Time calculated by sequencer system

STTT

Scheduled Turn-round Time

Metric SOBT - SIBT

STW

Slot Tolerance Window

CTOT –5 / +10 minutes

SUG 

Start Up Given 

A-CDM@FRA process status 

SUR
Start Up Request  A-CDM@FRA process status 

Acronym

Definition

Explanation

TBD

To Be Defined

 

TDP

Target DPI sended to NMOC

A-CDM@FRA process status

T-DPI

Target - Departure Planning Information message

This DPI message is sent from the CDM Airport to the NMOC (ETFMS) notifying the Target Take Off Time (TTOT).

TE

Terminated

FUM status

TFDPS

Tower Flight Data Processing System

Operational Tower system

TFO

Take Off from outstation

A-CDM@FRA process status

TIBT

Target In-Block Time

 

TLDT

Target Landing Time

Targeted Time from the Arrival management process at the threshold, taking runway sequence and constraints into account. It is not a constraint but a progressively refined planning time used to coordinate between arrival and departure management processes. Each TLDT on one runway is separated from other TLDT or TTOT to represent vortex and/ or SID separation between aircraft.

TMA

Terminal Manoeuvring Area

 

TMI

Thirty Minutes Inbound

The time at which the DFS-AMAN delivers ARCID, ARCTYP and ELDT to the Fraport-FDPS

TMO

Ten Minutes Out

A-CDM@FRA process status (ELDT – 10min)

TOBT

Target Off-Block Time

The time that an Aircraft Operator or Ground Handler estimates that an aircraft will be ready, all doors closed, boarding bridge removed, push back vehicle available and ready to start up / push back immediately upon reception of clearance from the TWR

TOP

Tow on Position

A-CDM@FRA process status

TSAT

Target Start Up Approval Time

The time provided by ATC taking into account TOBT, CTOT and/or the traffic situation that an aircraft can expect start up / push back approval
Note: The actual start up approval (ASAT) can be given in advance of TSAT

TTDF

Target Time over Departure Fix

 

TTOF

Target Time over Fix

 

TTOT

Target Take Off Time

The Target Take Off Time taking into account the TOBT/TSAT plus the EXOT. Each TTOT on one runway is separated from other TTOT or TLDT to represent vortex and/or SID separation between aircraft.

TWR

Aerodrome Control Tower

 

TWY

Taxiway

 

TXG

Taxi Given

A-CDM@FRA process status

TXR

Taxi Requested

A-CDM@FRA process status

TYP

Aircraft Type

 

Acronym

Definition

Explanation

UI

User Interface

 

Acronym

Definition

Explanation

VDZ

Verkehrsdatenzentrale

Fraport Airport Traffic Data Center

VFR

Visual Flight Rules

 

VK

Vorfeldkontrolle

Fraport Apron Control

vs.

Versus

 

VTOT

Virtuelle Take Off Time

Internal system time calculated by sequencer system for TSAT gereration

VTTC

Variable Taxi Time Calculation

 

VZ

Verkehrszentrale

Fraport Airport Traffic Center

Acronym

Definition

Explanation

WBS

Work Breakdown Structure

 

WP

Work Package