Aviation Dictionary
Aviation Dictionary
Aviation Dictionary
Understand the terms that ensure smooth operations in aviation.
The aviation industry is filled with specialized terms that can be hard to navigate—especially in Ground Handling, Operational Performance, and Service Level Management.
This dictionary provides simple, clear definitions for key terms used across the Cosmos platform and in day-to-day operations. Whether you’re an airline manager, provider partner, or just aviation-curious, this is your go-to reference for cutting through complexity.
Disclaimer: This dictionary is designed for informational purposes only. While we aim for accuracy, terms may be interpreted differently depending on airline or airport context. For regulatory or contractual use, please refer to your official documents or governing bodies such as IATA or EASA.
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A-CDM
Airport Collaborative Decision Making
Description:
EUROCONTROL/CDM initiative for major airports
Example:
A-CDM is active at FRA, MUC, AMS, etc.
A-CDM
Airport Collaborative Decision Making
Description:
EUROCONTROL/CDM initiative for major airports
Example:
A-CDM is active at FRA, MUC, AMS, etc.
A-CDM
Airport Collaborative Decision Making
Description:
EUROCONTROL/CDM initiative for major airports
Example:
A-CDM is active at FRA, MUC, AMS, etc.
A/C
Aircraft
Description:
Any powered, fixed-wing or rotary-wing vehicle used for air transport.
Example:
B737, A320, ATR72, etc.
A/C
Aircraft
Description:
Any powered, fixed-wing or rotary-wing vehicle used for air transport.
Example:
B737, A320, ATR72, etc.
A/C
Aircraft
Description:
Any powered, fixed-wing or rotary-wing vehicle used for air transport.
Example:
B737, A320, ATR72, etc.
ACARS
Aircraft Communications Addressing and Reporting System
Description:
Digital system for sending/receiving messages in-flight
Example:
ACARS message sent to dispatch for arrival ETA
ACARS
Aircraft Communications Addressing and Reporting System
Description:
Digital system for sending/receiving messages in-flight
Example:
ACARS message sent to dispatch for arrival ETA
ACARS
Aircraft Communications Addressing and Reporting System
Description:
Digital system for sending/receiving messages in-flight
Example:
ACARS message sent to dispatch for arrival ETA
ADEP/ADES
Departure/Arrival Aerodrome
Description:
Airport of departure/arrival, typically in flight schedules.
Example:
ADEP: FRA; ADES: LHR
ADEP/ADES
Departure/Arrival Aerodrome
Description:
Airport of departure/arrival, typically in flight schedules.
Example:
ADEP: FRA; ADES: LHR
ADEP/ADES
Departure/Arrival Aerodrome
Description:
Airport of departure/arrival, typically in flight schedules.
Example:
ADEP: FRA; ADES: LHR
AHM
Airport Handling Manual
Description:
IATA's industry standard manual for ground ops processes.
Example:
"Follow AHM 810 procedure"
AHM
Airport Handling Manual
Description:
IATA's industry standard manual for ground ops processes.
Example:
"Follow AHM 810 procedure"
AHM
Airport Handling Manual
Description:
IATA's industry standard manual for ground ops processes.
Example:
"Follow AHM 810 procedure"
Airside/Landside
Airside/Landside
Description:
Airside: secured, aircraft ops; Landside: public areas (check-in, arrivals).
Example:
Staff may require airside ID
Airside/Landside
Airside/Landside
Description:
Airside: secured, aircraft ops; Landside: public areas (check-in, arrivals).
Example:
Staff may require airside ID
Airside/Landside
Airside/Landside
Description:
Airside: secured, aircraft ops; Landside: public areas (check-in, arrivals).
Example:
Staff may require airside ID
AODB
Airport Operational Database
Description:
The central IT system/database at an airport for managing and sharing real-time operational data and status updates.
Example:
"Can we integrate with your AODB?"
AODB
Airport Operational Database
Description:
The central IT system/database at an airport for managing and sharing real-time operational data and status updates.
Example:
"Can we integrate with your AODB?"
AODB
Airport Operational Database
Description:
The central IT system/database at an airport for managing and sharing real-time operational data and status updates.
Example:
"Can we integrate with your AODB?"
AOG
Aircraft on Ground
Description:
Aircraft unable to fly due to technical issues; urgent for ops/maintenance.
Example:
"We have an AOG in ZRH."
AOG
Aircraft on Ground
Description:
Aircraft unable to fly due to technical issues; urgent for ops/maintenance.
Example:
"We have an AOG in ZRH."
AOG
Aircraft on Ground
Description:
Aircraft unable to fly due to technical issues; urgent for ops/maintenance.
Example:
"We have an AOG in ZRH."
APU
Auxiliary Power Unit
Description:
Small engine providing power on ground
Example:
APU started for cabin power
APU
Auxiliary Power Unit
Description:
Small engine providing power on ground
Example:
APU started for cabin power
APU
Auxiliary Power Unit
Description:
Small engine providing power on ground
Example:
APU started for cabin power
ASDA
Accelerate-Stop Distance Available
Description:
Length for aborted takeoff with stop margin
Example:
ASDA = 2900m on RWY 26
ASDA
Accelerate-Stop Distance Available
Description:
Length for aborted takeoff with stop margin
Example:
ASDA = 2900m on RWY 26
ASDA
Accelerate-Stop Distance Available
Description:
Length for aborted takeoff with stop margin
Example:
ASDA = 2900m on RWY 26
ATA
Actual Time of Arrival
Description:
When the aircraft actually arrived at gate or stand.
Example:
Used in OTP metrics
ATA
Actual Time of Arrival
Description:
When the aircraft actually arrived at gate or stand.
Example:
Used in OTP metrics
ATA
Actual Time of Arrival
Description:
When the aircraft actually arrived at gate or stand.
Example:
Used in OTP metrics
ATD
Actual Time of Departure
Description:
Time when aircraft physically leaves the stand/gate.
Example:
Used for SLA calculation
ATD
Actual Time of Departure
Description:
Time when aircraft physically leaves the stand/gate.
Example:
Used for SLA calculation
ATD
Actual Time of Departure
Description:
Time when aircraft physically leaves the stand/gate.
Example:
Used for SLA calculation
ATIS
Automatic Terminal Information Service
Description:
Broadcast of airport operational/weather info via radio
Example:
ATIS 119.25 MHz for weather and runway info
ATIS
Automatic Terminal Information Service
Description:
Broadcast of airport operational/weather info via radio
Example:
ATIS 119.25 MHz for weather and runway info
ATIS
Automatic Terminal Information Service
Description:
Broadcast of airport operational/weather info via radio
Example:
ATIS 119.25 MHz for weather and runway info
Bagroom
Bagroom
Description:
Area where bags are sorted for loading/unloading.
Example:
Bagroom backlog delays
Bagroom
Bagroom
Description:
Area where bags are sorted for loading/unloading.
Example:
Bagroom backlog delays
Bagroom
Bagroom
Description:
Area where bags are sorted for loading/unloading.
Example:
Bagroom backlog delays
BRNAV
Basic Area Navigation
Description:
Basic GPS-based navigation
Example:
BRNAV coverage in Europe
BRNAV
Basic Area Navigation
Description:
Basic GPS-based navigation
Example:
BRNAV coverage in Europe
BRNAV
Basic Area Navigation
Description:
Basic GPS-based navigation
Example:
BRNAV coverage in Europe
BRS
Baggage Reconciliation System
Description:
System for tracking and reconciling checked baggage.
Example:
"BRS failed, baggage left behind."
BRS
Baggage Reconciliation System
Description:
System for tracking and reconciling checked baggage.
Example:
"BRS failed, baggage left behind."
BRS
Baggage Reconciliation System
Description:
System for tracking and reconciling checked baggage.
Example:
"BRS failed, baggage left behind."
CDM
Collaborative Decision Making
Description:
Improved efficiency through stakeholder cooperation at airports
Example:
CDM tools enhance TAT and resource allocation
CDM
Collaborative Decision Making
Description:
Improved efficiency through stakeholder cooperation at airports
Example:
CDM tools enhance TAT and resource allocation
CDM
Collaborative Decision Making
Description:
Improved efficiency through stakeholder cooperation at airports
Example:
CDM tools enhance TAT and resource allocation
CK-IN
Check-in
Description:
Passenger/baggage processing before security/boarding.
Example:
"Check-in closes 40 min before ETD"
CK-IN
Check-in
Description:
Passenger/baggage processing before security/boarding.
Example:
"Check-in closes 40 min before ETD"
CK-IN
Check-in
Description:
Passenger/baggage processing before security/boarding.
Example:
"Check-in closes 40 min before ETD"
CPDLC
Controller Pilot Data Link Communications
Description:
Text-based ATC communication system
Example:
CPDLC used in oceanic crossings
CPDLC
Controller Pilot Data Link Communications
Description:
Text-based ATC communication system
Example:
CPDLC used in oceanic crossings
CPDLC
Controller Pilot Data Link Communications
Description:
Text-based ATC communication system
Example:
CPDLC used in oceanic crossings
Critical Path
Critical Path
Description:
Sequence of activities that determine minimum TAT.
Example:
Delay here delays departure
Critical Path
Critical Path
Description:
Sequence of activities that determine minimum TAT.
Example:
Delay here delays departure
Critical Path
Critical Path
Description:
Sequence of activities that determine minimum TAT.
Example:
Delay here delays departure
CUSS
Common Use Self Service
Description:
Shared check-in/bag-drop kiosks used by multiple airlines.
Example:
Reduces queue time
CUSS
Common Use Self Service
Description:
Shared check-in/bag-drop kiosks used by multiple airlines.
Example:
Reduces queue time
CUSS
Common Use Self Service
Description:
Shared check-in/bag-drop kiosks used by multiple airlines.
Example:
Reduces queue time
CUTE
Common Use Terminal Equipment
Description:
Shared airport equipment (e.g., check-in kiosks, gates) across multiple airlines.
Example:
Reduces hardware costs
CUTE
Common Use Terminal Equipment
Description:
Shared airport equipment (e.g., check-in kiosks, gates) across multiple airlines.
Example:
Reduces hardware costs
CUTE
Common Use Terminal Equipment
Description:
Shared airport equipment (e.g., check-in kiosks, gates) across multiple airlines.
Example:
Reduces hardware costs
DCS
Departure Control System
Description:
Software to manage check-in, load control, and boarding.
Example:
Amadeus Altea DCS, Sabre DCS
DCS
Departure Control System
Description:
Software to manage check-in, load control, and boarding.
Example:
Amadeus Altea DCS, Sabre DCS
DCS
Departure Control System
Description:
Software to manage check-in, load control, and boarding.
Example:
Amadeus Altea DCS, Sabre DCS
DIM
Disruption Management
Description:
Process to handle irregular ops (delays, cancellations, diversions).
Example:
"Disruption team activated"
DIM
Disruption Management
Description:
Process to handle irregular ops (delays, cancellations, diversions).
Example:
"Disruption team activated"
DIM
Disruption Management
Description:
Process to handle irregular ops (delays, cancellations, diversions).
Example:
"Disruption team activated"
DL Code
Delay Code (IATA/ICAO)
Description:
Standardized 2/3-digit codes for reporting reasons for delay.
Example:
31: Late Pax; 85: Tech issues
DL Code
Delay Code (IATA/ICAO)
Description:
Standardized 2/3-digit codes for reporting reasons for delay.
Example:
31: Late Pax; 85: Tech issues
DL Code
Delay Code (IATA/ICAO)
Description:
Standardized 2/3-digit codes for reporting reasons for delay.
Example:
31: Late Pax; 85: Tech issues
DLA
Delay
Description:
A flight event causing late departure or arrival.
Example:
"DLA15" = 15 min delay
DLA
Delay
Description:
A flight event causing late departure or arrival.
Example:
"DLA15" = 15 min delay
DLA
Delay
Description:
A flight event causing late departure or arrival.
Example:
"DLA15" = 15 min delay
ELT
Emergency Locator Transmitter
Description:
Beacon that aids search/rescue after crash
Example:
ELT auto-activates after crash
ELT
Emergency Locator Transmitter
Description:
Beacon that aids search/rescue after crash
Example:
ELT auto-activates after crash
ELT
Emergency Locator Transmitter
Description:
Beacon that aids search/rescue after crash
Example:
ELT auto-activates after crash
ETA/ETD
Estimated Time of Arrival/Departure
Description:
Expected time based on flight plan or updated ops info.
Example:
Used in flight following/ops
ETA/ETD
Estimated Time of Arrival/Departure
Description:
Expected time based on flight plan or updated ops info.
Example:
Used in flight following/ops
ETA/ETD
Estimated Time of Arrival/Departure
Description:
Expected time based on flight plan or updated ops info.
Example:
Used in flight following/ops
ETOPS
Extended-range Twin-engine Operational Performance Standards
Description:
Allows twin-jets to fly long overwater/remote routes
Example:
ETOPS twin-jets allowed over Atlantic
ETOPS
Extended-range Twin-engine Operational Performance Standards
Description:
Allows twin-jets to fly long overwater/remote routes
Example:
ETOPS twin-jets allowed over Atlantic
ETOPS
Extended-range Twin-engine Operational Performance Standards
Description:
Allows twin-jets to fly long overwater/remote routes
Example:
ETOPS twin-jets allowed over Atlantic
FIDS
Flight Information Display System
Description:
Digital screens showing current flight info in terminals.
Example:
Pax reference in terminals
FIDS
Flight Information Display System
Description:
Digital screens showing current flight info in terminals.
Example:
Pax reference in terminals
FIDS
Flight Information Display System
Description:
Digital screens showing current flight info in terminals.
Example:
Pax reference in terminals
FOD
Foreign Object Debris
Description:
Debris on airfield which can damage aircraft
Example:
Ramp check for FOD before pushback
FOD
Foreign Object Debris
Description:
Debris on airfield which can damage aircraft
Example:
Ramp check for FOD before pushback
FOD
Foreign Object Debris
Description:
Debris on airfield which can damage aircraft
Example:
Ramp check for FOD before pushback
GH
Ground Handling
Description:
The range of activities/services to support aircraft turnaround on the ground.
Example:
"GH caused a delay"
GH
Ground Handling
Description:
The range of activities/services to support aircraft turnaround on the ground.
Example:
"GH caused a delay"
GH
Ground Handling
Description:
The range of activities/services to support aircraft turnaround on the ground.
Example:
"GH caused a delay"
GHA
Ground Handling Agent
Description:
Third-party provider responsible for services on behalf of airlines.
Example:
"Who is the responsible GHA?"
GHA
Ground Handling Agent
Description:
Third-party provider responsible for services on behalf of airlines.
Example:
"Who is the responsible GHA?"
GHA
Ground Handling Agent
Description:
Third-party provider responsible for services on behalf of airlines.
Example:
"Who is the responsible GHA?"
GHM
(Ground) Handling Manual
Description:
Document with SOPs for all ground ops, often based on IATA AHM/ICAO.
Example:
"Refer to Handling Manual"
GHM
(Ground) Handling Manual
Description:
Document with SOPs for all ground ops, often based on IATA AHM/ICAO.
Example:
"Refer to Handling Manual"
GHM
(Ground) Handling Manual
Description:
Document with SOPs for all ground ops, often based on IATA AHM/ICAO.
Example:
"Refer to Handling Manual"
GPU
Ground Power Unit
Description:
Equipment supplying power to aircraft on ground
Example:
GPU connected during overnight stand
GPU
Ground Power Unit
Description:
Equipment supplying power to aircraft on ground
Example:
GPU connected during overnight stand
GPU
Ground Power Unit
Description:
Equipment supplying power to aircraft on ground
Example:
GPU connected during overnight stand
GSE
Ground Support Equipment
Description:
All mechanical and electrical equipment used to service aircraft between flights.
Example:
"The GSE fleet includes new electric belt loaders for eco-friendly ramp ops."
GSE
Ground Support Equipment
Description:
All mechanical and electrical equipment used to service aircraft between flights.
Example:
"The GSE fleet includes new electric belt loaders for eco-friendly ramp ops."
GSE
Ground Support Equipment
Description:
All mechanical and electrical equipment used to service aircraft between flights.
Example:
"The GSE fleet includes new electric belt loaders for eco-friendly ramp ops."
GT
Ground Time
Description:
Total time aircraft spends on ground between flights.
Example:
Key metric in aircraft utilization
GT
Ground Time
Description:
Total time aircraft spends on ground between flights.
Example:
Key metric in aircraft utilization
GT
Ground Time
Description:
Total time aircraft spends on ground between flights.
Example:
Key metric in aircraft utilization
Hub
Hub Airport
Description:
Central airport used by an airline for connecting flights.
Example:
FRA for Lufthansa, DOH for Qatar
Hub
Hub Airport
Description:
Central airport used by an airline for connecting flights.
Example:
FRA for Lufthansa, DOH for Qatar
Hub
Hub Airport
Description:
Central airport used by an airline for connecting flights.
Example:
FRA for Lufthansa, DOH for Qatar
ILS
Instrument Landing System
Description:
Navigation system for precision landing
Example:
ILS CAT III used in fog
ILS
Instrument Landing System
Description:
Navigation system for precision landing
Example:
ILS CAT III used in fog
ILS
Instrument Landing System
Description:
Navigation system for precision landing
Example:
ILS CAT III used in fog
IMC
Instrument Meteorological Conditions
Description:
Flight conditions requiring instruments
Example:
QNH set to 1012 hPa
IMC
Instrument Meteorological Conditions
Description:
Flight conditions requiring instruments
Example:
QNH set to 1012 hPa
IMC
Instrument Meteorological Conditions
Description:
Flight conditions requiring instruments
Example:
QNH set to 1012 hPa
IS-XML
IATA Standard XML
Description:
XML-based messaging standard for ground handling data exchange.
Example:
Used in SLA digitalization
IS-XML
IATA Standard XML
Description:
XML-based messaging standard for ground handling data exchange.
Example:
Used in SLA digitalization
IS-XML
IATA Standard XML
Description:
XML-based messaging standard for ground handling data exchange.
Example:
Used in SLA digitalization
ISAGO
IATA Safety Audit for Ground Operations
Description:
International safety and quality audit standard for ground service providers.
Example:
Required for global handlers
ISAGO
IATA Safety Audit for Ground Operations
Description:
International safety and quality audit standard for ground service providers.
Example:
Required for global handlers
ISAGO
IATA Safety Audit for Ground Operations
Description:
International safety and quality audit standard for ground service providers.
Example:
Required for global handlers
LDM
Load Message
Description:
Telex message detailing load data for next station.
Example:
"Send LDM after departure"
LDM
Load Message
Description:
Telex message detailing load data for next station.
Example:
"Send LDM after departure"
LDM
Load Message
Description:
Telex message detailing load data for next station.
Example:
"Send LDM after departure"
LIR
Load Instruction Report
Description:
Document specifying baggage/cargo loading positions.
Example:
Given to ramp team
LIR
Load Instruction Report
Description:
Document specifying baggage/cargo loading positions.
Example:
Given to ramp team
LIR
Load Instruction Report
Description:
Document specifying baggage/cargo loading positions.
Example:
Given to ramp team
LM
Line Maintenance
Description:
Light maintenance performed at the gate or stand.
Example:
Pre-flight, daily checks
LM
Line Maintenance
Description:
Light maintenance performed at the gate or stand.
Example:
Pre-flight, daily checks
LM
Line Maintenance
Description:
Light maintenance performed at the gate or stand.
Example:
Pre-flight, daily checks
LS
Loadsheet
Description:
Official document with final passenger, baggage, and cargo info for a flight.
Example:
"Signed by captain before taxi"
LS
Loadsheet
Description:
Official document with final passenger, baggage, and cargo info for a flight.
Example:
"Signed by captain before taxi"
LS
Loadsheet
Description:
Official document with final passenger, baggage, and cargo info for a flight.
Example:
"Signed by captain before taxi"
MaxGT
Maximum Ground Time
Description:
The longest allowable scheduled ground time before crew duty time limits, maintenance constraints, or slot regulations require rescheduling or escalation. Used to flag delays or crew rest windows.
Example:
"Crew duty limits triggered after exceeding MaxGT — required delay notification sent."
MaxGT
Maximum Ground Time
Description:
The longest allowable scheduled ground time before crew duty time limits, maintenance constraints, or slot regulations require rescheduling or escalation. Used to flag delays or crew rest windows.
Example:
"Crew duty limits triggered after exceeding MaxGT — required delay notification sent."
MaxGT
Maximum Ground Time
Description:
The longest allowable scheduled ground time before crew duty time limits, maintenance constraints, or slot regulations require rescheduling or escalation. Used to flag delays or crew rest windows.
Example:
"Crew duty limits triggered after exceeding MaxGT — required delay notification sent."
MCT
Maximum Continuous Thrust
Description:
Engine power setting for long ops
Example:
ETOPS 180 certified aircraft
MCT
Maximum Continuous Thrust
Description:
Engine power setting for long ops
Example:
ETOPS 180 certified aircraft
MCT
Maximum Continuous Thrust
Description:
Engine power setting for long ops
Example:
ETOPS 180 certified aircraft
MEL
Minimum Equipment List
Description:
List of equipment allowed to be inoperative for aircraft to remain airworthy.
Example:
MEL item deferred
MEL
Minimum Equipment List
Description:
List of equipment allowed to be inoperative for aircraft to remain airworthy.
Example:
MEL item deferred
MEL
Minimum Equipment List
Description:
List of equipment allowed to be inoperative for aircraft to remain airworthy.
Example:
MEL item deferred
METAR
Meteorological Aerodrome Report
Description:
Real-time weather conditions at an airport
Example:
METAR EDDM 160950Z 24012KT 9999 BKN015 10/07 Q1012
METAR
Meteorological Aerodrome Report
Description:
Real-time weather conditions at an airport
Example:
METAR EDDM 160950Z 24012KT 9999 BKN015 10/07 Q1012
METAR
Meteorological Aerodrome Report
Description:
Real-time weather conditions at an airport
Example:
METAR EDDM 160950Z 24012KT 9999 BKN015 10/07 Q1012
MHB
Manual Handling Baggage
Description:
Bags that cannot be processed automatically and require manual intervention.
Example:
Odd-sized or heavy bags
MHB
Manual Handling Baggage
Description:
Bags that cannot be processed automatically and require manual intervention.
Example:
Odd-sized or heavy bags
MHB
Manual Handling Baggage
Description:
Bags that cannot be processed automatically and require manual intervention.
Example:
Odd-sized or heavy bags
MinGT
Minimum Ground Time
Description:
The shortest allowable turnaround time at a station for a specific aircraft type and service level. Often determined by operational procedures, aircraft type, and regulatory requirements.
Example:
"A320 MinGT at MUC is 35 minutes with full ground handling services."
MinGT
Minimum Ground Time
Description:
The shortest allowable turnaround time at a station for a specific aircraft type and service level. Often determined by operational procedures, aircraft type, and regulatory requirements.
Example:
"A320 MinGT at MUC is 35 minutes with full ground handling services."
MinGT
Minimum Ground Time
Description:
The shortest allowable turnaround time at a station for a specific aircraft type and service level. Often determined by operational procedures, aircraft type, and regulatory requirements.
Example:
"A320 MinGT at MUC is 35 minutes with full ground handling services."
MLW
Maximum Landing Weight
Description:
Aircraft weight limit for landing
Example:
MLW = 67.0 tons
MLW
Maximum Landing Weight
Description:
Aircraft weight limit for landing
Example:
MLW = 67.0 tons
MLW
Maximum Landing Weight
Description:
Aircraft weight limit for landing
Example:
MLW = 67.0 tons
MTOW
Maximum Takeoff Weight
Description:
Aircraft weight limit for takeoff
Example:
MTOW = 79.0 tons
MTOW
Maximum Takeoff Weight
Description:
Aircraft weight limit for takeoff
Example:
MTOW = 79.0 tons
MTOW
Maximum Takeoff Weight
Description:
Aircraft weight limit for takeoff
Example:
MTOW = 79.0 tons
MVT
Movement Message
Description:
Standard IATA telex message for flight status (ARR, DEP, DEL, etc.).
Example:
"Send MVT on block"
MVT
Movement Message
Description:
Standard IATA telex message for flight status (ARR, DEP, DEL, etc.).
Example:
"Send MVT on block"
MVT
Movement Message
Description:
Standard IATA telex message for flight status (ARR, DEP, DEL, etc.).
Example:
"Send MVT on block"
NOTAM
Notice to Airmen
Description:
Official airspace or operational notices for pilots and airport operators
Example:
NOTAM: Runway 25R closed from 06:00-08:00Z
NOTAM
Notice to Airmen
Description:
Official airspace or operational notices for pilots and airport operators
Example:
NOTAM: Runway 25R closed from 06:00-08:00Z
NOTAM
Notice to Airmen
Description:
Official airspace or operational notices for pilots and airport operators
Example:
NOTAM: Runway 25R closed from 06:00-08:00Z
Ops
Operations
Description:
Airline or GHA team managing flight operations.
Example:
"Ops control notified"
Ops
Operations
Description:
Airline or GHA team managing flight operations.
Example:
"Ops control notified"
Ops
Operations
Description:
Airline or GHA team managing flight operations.
Example:
"Ops control notified"
OTP
On-Time Performance
Description:
KPI tracking punctuality (departure/arrival vs. schedule).
Example:
OTP90 = 90% on-time departures
OTP
On-Time Performance
Description:
KPI tracking punctuality (departure/arrival vs. schedule).
Example:
OTP90 = 90% on-time departures
OTP
On-Time Performance
Description:
KPI tracking punctuality (departure/arrival vs. schedule).
Example:
OTP90 = 90% on-time departures
PAX
Passengers
Description:
Count or reference to people traveling on aircraft.
Example:
"180 PAX boarded"
PAX
Passengers
Description:
Count or reference to people traveling on aircraft.
Example:
"180 PAX boarded"
PAX
Passengers
Description:
Count or reference to people traveling on aircraft.
Example:
"180 PAX boarded"
PB
Pushback
Description:
Procedure to move aircraft from gate using a tug.
Example:
"Pushback at 07:03L"
PB
Pushback
Description:
Procedure to move aircraft from gate using a tug.
Example:
"Pushback at 07:03L"
PB
Pushback
Description:
Procedure to move aircraft from gate using a tug.
Example:
"Pushback at 07:03L"
PBB/JETWAY
Passenger Boarding Bridge
Description:
Movable bridge connecting aircraft to terminal.
Example:
"Gate 15 has a broken PBB"
PBB/JETWAY
Passenger Boarding Bridge
Description:
Movable bridge connecting aircraft to terminal.
Example:
"Gate 15 has a broken PBB"
PBB/JETWAY
Passenger Boarding Bridge
Description:
Movable bridge connecting aircraft to terminal.
Example:
"Gate 15 has a broken PBB"
PIREP
Pilot Report
Description:
Weather or turbulence reports from pilots
Example:
PIREP: Moderate turbulence FL330
PIREP
Pilot Report
Description:
Weather or turbulence reports from pilots
Example:
PIREP: Moderate turbulence FL330
PIREP
Pilot Report
Description:
Weather or turbulence reports from pilots
Example:
PIREP: Moderate turbulence FL330
PRM
Persons with Reduced Mobility
Description:
Passengers needing assistance, e.g. wheelchair service.
Example:
PRM pre-notification required
PRM
Persons with Reduced Mobility
Description:
Passengers needing assistance, e.g. wheelchair service.
Example:
PRM pre-notification required
PRM
Persons with Reduced Mobility
Description:
Passengers needing assistance, e.g. wheelchair service.
Example:
PRM pre-notification required
QFE
Altimeter Pressure Setting (runway threshold)
Description:
Altimeter pressure for airfield elevation
Example:
Climb at MCT for engine life
QFE
Altimeter Pressure Setting (runway threshold)
Description:
Altimeter pressure for airfield elevation
Example:
Climb at MCT for engine life
QFE
Altimeter Pressure Setting (runway threshold)
Description:
Altimeter pressure for airfield elevation
Example:
Climb at MCT for engine life
QNH
Altimeter Pressure Setting (mean sea level)
Description:
Barometric pressure for altimeter (MSL)
Example:
QFE = 995 hPa at airfield
QNH
Altimeter Pressure Setting (mean sea level)
Description:
Barometric pressure for altimeter (MSL)
Example:
QFE = 995 hPa at airfield
QNH
Altimeter Pressure Setting (mean sea level)
Description:
Barometric pressure for altimeter (MSL)
Example:
QFE = 995 hPa at airfield
RA
Resolution Advisory
Description:
Advisory action to prevent collision
Example:
VMC needed for visual approach
RA
Resolution Advisory
Description:
Advisory action to prevent collision
Example:
VMC needed for visual approach
RA
Resolution Advisory
Description:
Advisory action to prevent collision
Example:
VMC needed for visual approach
RMP
Ramp
Description:
Area on the airport apron for aircraft parking, servicing, loading/unloading.
Example:
"Ramp services"
RMP
Ramp
Description:
Area on the airport apron for aircraft parking, servicing, loading/unloading.
Example:
"Ramp services"
RMP
Ramp
Description:
Area on the airport apron for aircraft parking, servicing, loading/unloading.
Example:
"Ramp services"
RNAV
Area Navigation
Description:
GPS-based area navigation
Example:
RNAV SID published for noise abatement
RNAV
Area Navigation
Description:
GPS-based area navigation
Example:
RNAV SID published for noise abatement
RNAV
Area Navigation
Description:
GPS-based area navigation
Example:
RNAV SID published for noise abatement
RNP
Required Navigation Performance
Description:
Performance-based nav with required accuracy
Example:
RNP 0.3 required for approach
RNP
Required Navigation Performance
Description:
Performance-based nav with required accuracy
Example:
RNP 0.3 required for approach
RNP
Required Navigation Performance
Description:
Performance-based nav with required accuracy
Example:
RNP 0.3 required for approach
RS
Remote Stand
Description:
Parking position away from terminal, requiring bus boarding.
Example:
"Remote stand, bus ops required"
RS
Remote Stand
Description:
Parking position away from terminal, requiring bus boarding.
Example:
"Remote stand, bus ops required"
RS
Remote Stand
Description:
Parking position away from terminal, requiring bus boarding.
Example:
"Remote stand, bus ops required"
RWY
Runway
Description:
Designated landing/takeoff path
Example:
RWY 08L active
RWY
Runway
Description:
Designated landing/takeoff path
Example:
RWY 08L active
RWY
Runway
Description:
Designated landing/takeoff path
Example:
RWY 08L active
SID
Standard Instrument Departure
Description:
Published departure procedure
Example:
SID RILAX 1H departure
SID
Standard Instrument Departure
Description:
Published departure procedure
Example:
SID RILAX 1H departure
SID
Standard Instrument Departure
Description:
Published departure procedure
Example:
SID RILAX 1H departure
SITA
Société Internationale de Télécommunications Aéronautiques
Description:
Provider of air transport communications and IT.
Example:
"SITA message for AOG"
SITA
Société Internationale de Télécommunications Aéronautiques
Description:
Provider of air transport communications and IT.
Example:
"SITA message for AOG"
SITA
Société Internationale de Télécommunications Aéronautiques
Description:
Provider of air transport communications and IT.
Example:
"SITA message for AOG"
SLA
Service Level Agreement
Description:
Contractual performance targets (punctuality, service quality) between airline & provider.
Example:
"SLA breach triggers penalty"
SLA
Service Level Agreement
Description:
Contractual performance targets (punctuality, service quality) between airline & provider.
Example:
"SLA breach triggers penalty"
SLA
Service Level Agreement
Description:
Contractual performance targets (punctuality, service quality) between airline & provider.
Example:
"SLA breach triggers penalty"
SLA Breach
SLA Breach
Description:
Failure to meet contractual SLA targets.
Example:
May trigger penalty or alert
SLA Breach
SLA Breach
Description:
Failure to meet contractual SLA targets.
Example:
May trigger penalty or alert
SLA Breach
SLA Breach
Description:
Failure to meet contractual SLA targets.
Example:
May trigger penalty or alert
SLA Penalty
SLA Penalty
Description:
Financial penalty applied when SLAs are missed.
Example:
"Delayed pushback, penalty applies"
SLA Penalty
SLA Penalty
Description:
Financial penalty applied when SLAs are missed.
Example:
"Delayed pushback, penalty applies"
SLA Penalty
SLA Penalty
Description:
Financial penalty applied when SLAs are missed.
Example:
"Delayed pushback, penalty applies"
Slot
Airport Slot
Description:
Approved time window for take-off/landing at congested airports.
Example:
"Lost slot, new ETD: 10:40"
Slot
Airport Slot
Description:
Approved time window for take-off/landing at congested airports.
Example:
"Lost slot, new ETD: 10:40"
Slot
Airport Slot
Description:
Approved time window for take-off/landing at congested airports.
Example:
"Lost slot, new ETD: 10:40"
SM
Station Manager
Description:
Person responsible for overall ground ops at a specific airport.
Example:
Reports to HQ or regional manager
SM
Station Manager
Description:
Person responsible for overall ground ops at a specific airport.
Example:
Reports to HQ or regional manager
SM
Station Manager
Description:
Person responsible for overall ground ops at a specific airport.
Example:
Reports to HQ or regional manager
SNOWTAM
Snow Notice to Airmen
Description:
NOTAM related to snow/ice conditions
Example:
SNOWTAM issued for icy conditions on TWY B
SNOWTAM
Snow Notice to Airmen
Description:
NOTAM related to snow/ice conditions
Example:
SNOWTAM issued for icy conditions on TWY B
SNOWTAM
Snow Notice to Airmen
Description:
NOTAM related to snow/ice conditions
Example:
SNOWTAM issued for icy conditions on TWY B
SSR
Secondary Surveillance Radar
Description:
Radar that identifies aircraft and altitudes
Example:
SSR code 5462 assigned
SSR
Secondary Surveillance Radar
Description:
Radar that identifies aircraft and altitudes
Example:
SSR code 5462 assigned
SSR
Secondary Surveillance Radar
Description:
Radar that identifies aircraft and altitudes
Example:
SSR code 5462 assigned
STAR
Standard Terminal Arrival Route
Description:
Published arrival procedure
Example:
STAR NATOR 1A arrival
STAR
Standard Terminal Arrival Route
Description:
Published arrival procedure
Example:
STAR NATOR 1A arrival
STAR
Standard Terminal Arrival Route
Description:
Published arrival procedure
Example:
STAR NATOR 1A arrival
STN
Station
Description:
Any airport location managed by airline or GHA for ops.
Example:
"Outstation" = non-hub station
STN
Station
Description:
Any airport location managed by airline or GHA for ops.
Example:
"Outstation" = non-hub station
STN
Station
Description:
Any airport location managed by airline or GHA for ops.
Example:
"Outstation" = non-hub station
TAF
Terminal Aerodrome Forecast
Description:
Forecasted weather for an airport (24-30h outlook)
Example:
TAF EDDF 160800Z 1609/1715 24010KT BKN020
TAF
Terminal Aerodrome Forecast
Description:
Forecasted weather for an airport (24-30h outlook)
Example:
TAF EDDF 160800Z 1609/1715 24010KT BKN020
TAF
Terminal Aerodrome Forecast
Description:
Forecasted weather for an airport (24-30h outlook)
Example:
TAF EDDF 160800Z 1609/1715 24010KT BKN020
TCAS
Traffic Collision Avoidance System
Description:
System that warns about potential mid-air collisions
Example:
TCAS RA: Climb, Climb
TCAS
Traffic Collision Avoidance System
Description:
System that warns about potential mid-air collisions
Example:
TCAS RA: Climb, Climb
TCAS
Traffic Collision Avoidance System
Description:
System that warns about potential mid-air collisions
Example:
TCAS RA: Climb, Climb
TCO
Turnaround Coordinator
Description:
Person responsible for managing all aspects of the aircraft turnaround.
Example:
"TCO clears the flight for departure"
TCO
Turnaround Coordinator
Description:
Person responsible for managing all aspects of the aircraft turnaround.
Example:
"TCO clears the flight for departure"
TCO
Turnaround Coordinator
Description:
Person responsible for managing all aspects of the aircraft turnaround.
Example:
"TCO clears the flight for departure"
TODR
Takeoff Distance Required
Description:
Distance required for takeoff
Example:
TODR = 2700m, aircraft OK for departure
TODR
Takeoff Distance Required
Description:
Distance required for takeoff
Example:
TODR = 2700m, aircraft OK for departure
TODR
Takeoff Distance Required
Description:
Distance required for takeoff
Example:
TODR = 2700m, aircraft OK for departure
TORA
Takeoff Run Available
Description:
Usable runway for takeoff roll
Example:
TORA = 3200m published
TORA
Takeoff Run Available
Description:
Usable runway for takeoff roll
Example:
TORA = 3200m published
TORA
Takeoff Run Available
Description:
Usable runway for takeoff roll
Example:
TORA = 3200m published
Turnaround (TAT)
Turnaround Time
Description:
Time from aircraft arrival at gate to next departure.
Example:
Key efficiency metric
Turnaround (TAT)
Turnaround Time
Description:
Time from aircraft arrival at gate to next departure.
Example:
Key efficiency metric
Turnaround (TAT)
Turnaround Time
Description:
Time from aircraft arrival at gate to next departure.
Example:
Key efficiency metric
Turnaround Process
Turnaround Process
Description:
End-to-end process from arrival to departure, including all service steps.
Example:
See 'Critical Path' below
Turnaround Process
Turnaround Process
Description:
End-to-end process from arrival to departure, including all service steps.
Example:
See 'Critical Path' below
Turnaround Process
Turnaround Process
Description:
End-to-end process from arrival to departure, including all service steps.
Example:
See 'Critical Path' below
TWY
Taxiway
Description:
Path connecting runways and aprons
Example:
TWY E3 blocked due to works
TWY
Taxiway
Description:
Path connecting runways and aprons
Example:
TWY E3 blocked due to works
TWY
Taxiway
Description:
Path connecting runways and aprons
Example:
TWY E3 blocked due to works
ULD
Unit Load Device
Description:
Standard containers/pallets for cargo/baggage on aircraft.
Example:
"AKH", "PMC" are ULD types
ULD
Unit Load Device
Description:
Standard containers/pallets for cargo/baggage on aircraft.
Example:
"AKH", "PMC" are ULD types
ULD
Unit Load Device
Description:
Standard containers/pallets for cargo/baggage on aircraft.
Example:
"AKH", "PMC" are ULD types
V1
Takeoff Decision Speed
Description:
Speed to decide abort/go
Example:
V1 = 142 KT
V1
Takeoff Decision Speed
Description:
Speed to decide abort/go
Example:
V1 = 142 KT
V1
Takeoff Decision Speed
Description:
Speed to decide abort/go
Example:
V1 = 142 KT
V2
Takeoff Safety Speed
Description:
Speed for safe climbout
Example:
V2 = 157 KT
V2
Takeoff Safety Speed
Description:
Speed for safe climbout
Example:
V2 = 157 KT
V2
Takeoff Safety Speed
Description:
Speed for safe climbout
Example:
V2 = 157 KT
VMC
Visual Meteorological Conditions
Description:
Flight conditions with visual reference
Example:
IMC below minima, switch to ILS
VMC
Visual Meteorological Conditions
Description:
Flight conditions with visual reference
Example:
IMC below minima, switch to ILS
VMC
Visual Meteorological Conditions
Description:
Flight conditions with visual reference
Example:
IMC below minima, switch to ILS
VR
Rotation Speed
Description:
Speed to lift off the runway
Example:
Rotate at VR = 150 KT
VR
Rotation Speed
Description:
Speed to lift off the runway
Example:
Rotate at VR = 150 KT
VR
Rotation Speed
Description:
Speed to lift off the runway
Example:
Rotate at VR = 150 KT
W&B
Weight and Balance
Description:
Calculations to ensure safe aircraft loading/distribution.
Example:
DCS/Loadmaster prepares W&B
W&B
Weight and Balance
Description:
Calculations to ensure safe aircraft loading/distribution.
Example:
DCS/Loadmaster prepares W&B
W&B
Weight and Balance
Description:
Calculations to ensure safe aircraft loading/distribution.
Example:
DCS/Loadmaster prepares W&B
ZFW
Zero Fuel Weight
Description:
Aircraft weight excluding fuel
Example:
ZFW = 60.5 tons
ZFW
Zero Fuel Weight
Description:
Aircraft weight excluding fuel
Example:
ZFW = 60.5 tons
ZFW
Zero Fuel Weight
Description:
Aircraft weight excluding fuel
Example:
ZFW = 60.5 tons
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Next-level service collaboration.
Next-level service collaboration.
Next-level service collaboration.
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Cosmos is the collaborative platform for the aviation industry that enables airlines and ground handling partners to increase transparency and foster collaboration.
© 2025 Cosmos Solutions GmbH
Next-level service collaboration
Cosmos is the collaborative platform for the aviation industry that enables airlines and ground handling partners to increase transparency and foster collaboration.
© 2025 Cosmos Solutions GmbH
Next-level service collaboration
Cosmos is the collaborative platform for the aviation industry that enables airlines and ground handling partners to increase transparency and foster collaboration.
© 2025 Cosmos Solutions GmbH