Notes on the relationship between off-block times.
| ACI DD Term | Notes |
|---|---|
| ScheduledOffBlockTime | The Airline's schedule. Typically received in IATA flight messages (IataFlightInformationMessage). |
| SlotScheduledOffBlockTime | The ScheduledOffBlockTime as received from the AirportSlot system. It should be the same as the ScheduledOffBlockTime, but might differ. Some Airports are not strictly slot regulated, or not slot regulated at all. |
| AirlineEstimatedOffBlockTime | The estimated OffBlock time as received from the relevant Airline, typically in IATA flight messages (IataFlightInformationMessage). This time is to a large extent to influence passenger behaviour (e.g go to gate). |
| EstimatedOffBlockTime | The Airline's operational OffBlock time from the flight plan. This is when the relevant Airline actually expect the aircraft to start moving. |
| ProbableOffBlockTime | What the Airport consider the most likely/probable time for OffBlock. This is the Airport's version of EstimatedOffBlockTime. |
| PublicEstimatedOffBlockTime | This is the time that should be shown to the public/passengers when it differs from ScheduledOffBlockTime. There might also be restrictions on how early it's made available. |
| TargetOffBlockTime | The time that an Aircraft operator / handling agent estimates that an aircraft will be ready (all doors closed, boarding bridge removed, push back vehicle present, ready to start up) to push back immediately upon reception of clearance from the air traffic control tower. |
| PredictedOffBlockTime | A prediction based on information not usually available, for instance weather on other airports and en-route. Possibly from an AI system. |
| ActualOffBlockTime | When off-block actually happened. |
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