OPS ABBR

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Last updated 2:03 PM on 8/18/26
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65 Terms

1
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STD

Scheduled Time of Departure

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STA

Scheduled Time of Arrival

3
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ETD

Estimated Time of Departure

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ETA

Estimated Time of Arrival

5
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ATD

Actual Time of Departure

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ATA

Actual Time of Arrival

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EOBT

Estimated Off-Block Time

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TOBT

Target Off-Block Time

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TSAT

Target Start-up Approval Time

10
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AOBT

Actual Off-Block Time

11
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AIBT

Actual In-Block Time

12
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SOBT

Scheduled Off-Block Time

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SIBT

Scheduled In-Block Time

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OBT

Off-Block Time

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ATOT

Actual Take-Off Time

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CTOT

Calculated Take-Off Time

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TTOT

Target Take-Off Time

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ALDT

Actual Landing Time

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ELDT

Estimated Landing Time

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TLDT

Target Landing Time

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T/O

Take-Off

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LDG

Landing

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DEP

Departure

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ARR

Arrival

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DIV

Diversion / Diverted

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RTB

Return to Base

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RTO

Rejected Take-Off

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RON

Remain Overnight

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FPL

Flight Plan

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ATC

Air Traffic Control

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ATFM

Air Traffic Flow Management

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ATM

Air Traffic Management

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A-CDM

Airport Collaborative Decision Making

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NM

Network Manager – EUROCONTROL

35
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FIR

Flight Information Region

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NOTAM

Notice to Airmen / Notice to Air Missions

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AIP

Aeronautical Information Publication

38
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SID

Standard Instrument Departure

39
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STAR

Standard Terminal Arrival Route

40
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RWY

Runway

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TWY

Taxiway

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APRON

Aircraft parking and handling area

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RAMP

Ramp / aircraft handling area

44
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SLOT

Allocated Airport or ATFM Slot

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REA

Ready Message / Request – ATFM context

46
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ACL

Airport Coordination Limited

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ACNL

Airport Coordination Netherlands

48
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L1

Level 1 Airport

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L2

Level 2 – Schedule Facilitated Airport

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L3

Level 3 – Coordinated Airport

51
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SCR

Slot Clearance Request

52
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SAL

Slot Allocation List

53
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HBD

Historic Baseline Date

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UTC

Coordinated Universal Time

55
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LT

Local Time

56
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DTT
Defined Turnaround Time – given turnaround time for a combination of airline, season, departure airport and arrival airport
57
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ETD
Calculated Time of Departure – in GoNow calculated from STD, ATA and DTT
58
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OTP D0
On-Time Performance at 0 minutes – ATD is at or before STD
59
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OTP D15
On-Time Performance at 15 minutes – ATD is no later than STD + 15 minutes
60
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FW OTP D0
First Wave On-Time Performance at 0 minutes – ATD is at or before STD for first-wave departures
61
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FW OTP D3
First Wave On-Time Performance at 3 minutes – ATD is no later than STD + 3 minutes for first-wave departures
62
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GTP
Ground Time Performance
63
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GTP D0
Ground Time Performance at 0 minutes
64
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GTP D2
Ground Time Performance at 2 minutes
65
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GTP D3
Ground Time Performance at 3 minutes