Online Coordination System

OCS Main

Baseline Peak Week

Value

Season

Country

Airport

Week containing

Local Time

Availability
Load/Capacity

Merge totals

Runway Availability

Legend:

Green	Plenty of slots available.
Amber	Limited slots available – Online Coordination will not automatically allocate a series of slots.
Red	Full to capacity. No slots available.
Grey	Night restrictions, runway closed, no constraint information available or no data available.

Each option is described below.

By entering this website you confirm your acceptance of the disclaimer.

Warning!

The slot availability displays only show runway slot availability. Other constraints, such as terminal or stand capacity or night period restrictions, may prevent slots being allocated as requested. The aircraft operator is responsible for complying with any and all additional restrictions or conditions that may apply to the operation of a flight at the airport concerned and must check the relevant publications (eg, NOTAMs, the Airport’s Conditions of Use, etc).

The allocation of a slot does not imply the availability of all facilities necessary for the operation. In all cases it is the aircraft operator’s responsibility to make suitable ground handling arrangements.

Week

Shows runway slot availability matrix for a particular week of the season by:

Horizontal: arrival/departure/total and day-of-operation
Vertical: hour

Use this to see the availability for a typical week, like a NAC-chart, or to find an ad hoc slot on a particular date.

Select season, country, airport, and week containing the date you are searching for (eg 01JAN) then click the update button.

Season by Day of Operation

Shows full season runway slot availability for a particular day-of-operation, eg Saturday, and arrival/departure/total by:

Horizontal: hour
Vertical (All): arrival/departure/total and date
Vertical (arrival, departure, or total): date

Use this display to see the runway slot availability of a series of slots on a particular day-of-operation.

Select season, country, airport, arrival/departure/total/all, and day-of-operation, then click the update button.

Season by Time

Shows full season runway slot availability for a particular hour by:

Horizontal: arrival/departure/total and day-of-operation
Vertical: date

Use this display to see the availability of a series of slots in a particular hour.

Select season, airport, and hour, then select the update button.

Week by Hour

Shows runway slot availability matrix for a particular week of the season and hour, eg Saturday 1100, for selected criteria by:

Horizontal: date
Vertical: hour by 5 minute increments

Use this display to see the availability for a typical week, like a NAC-chart, or to find an ad hoc slot on a particular date in a particular hour of specified week.

Select season, country, airport, week containing the date you are searching for (eg 01JAN), and hour, then click the update button.
Previous Hour and Next Hour buttons are provided to allow the user to toggle to the hours either side of the original requested hour.

Season by Hour

Shows full season runway slot availability for a particular day-of-operation and hour, eg Saturday 1100, for selected criteria by:

Horizontal: hour
Vertical (All): arrival/departure/total and date
Vertical (arrival, departure, or total): date

Use this display to see the runway slot availability of a series of slots on a particular day-of-operation/hour.

Select season, country, airport, arrival/departure/total/all, day-of-operation, and hour, then click the update button.
Previous Hour and Next Hour buttons are provided to allow the user to toggle to the hours either side of the original requested hour.

Baseline Peak Week

Shows runway slot availability matrix for a set baseline Peak Week of the season for coordinated airports which publish their baseline by:

Horizontal: arrival/departure/total and day-of-operation
Vertical: hour

Use this display to see the runway slot availability of a series of slots on a particular day-of-operation/hour.

Select season, country, and airport, then click the update button. The Peak Week is designated by the coordinator and can not be changed.

Merge Totals (recommended)

To see the runway slot availability for adding a new flight, ALWAYS select merged totals.

Most airports have a limit on the total number of runway slots and sub-limits on the number of arrivals and departures, eg, up to 40 movements per hour in total, of which up to 25 can be departures and 25 can be arrivals.

If an hour already has 14 arrival flights and 25 departure flights (39 in total – only 1 runway slot available), with merge totals selected the availability will be 1 arrival and 0 departures. This is the true availability for adding a new flight.

Without merge totals selected, the runway slot availability will be 11 arrivals, 0 departures, and 1 total slot. This means that an existing departure may be converted into an arrival, but not an arrival into a departure. Use this to test for possible arrival/departure slot swaps.

Detail View

The Week, Season by Day-of-Operation, and Season by Time views give the hourly runway slot availability.
To see the availability at a specific time within an hour, click on the appropriate cell to see the Detail View.

Note, the detailed availability is shown even if the hourly capacity is full. This is useful if you are trying to move a slot within the hour, say from 0910 to 0915.

Also, the runway slot availability is shown for each 5-minute period even though the constraint may be a 10 or 15-minute limit.

For example, if there is a 15-minute limit with 1 slot available between 0900-0910 then the time periods 0900, 0905, 0910 will each show 1 slot available. This means that a slot is available at 0900 or 0905 or 0910, not that 3 slots are available between 0900-0910.

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