Network Level Performance Statistics for ATN Aircraft

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This page shows the set of data link performance statistics at the level of the ATM Network (i.e. in principle all ANSPs but currently only Maastricht UAC, Skyguide, DFS and NATS are providing data) for the preceding year for ATN equipped aircraft. The set of graphs is currently limited as the tool to create them is still under validation. There is a corresponding set of graphs for FANS equipped aircraft. Click on the graph to bring up a description of what the metric is measuring. Performance targets are identified for some of these parameters underneath the corresponding graphs. These targets are derived from requirements given in ED120 as explained in the Link 2000+ DLS CRO Performance Monitoring requirements document available from the CRO library.


General Performance Measures

Technical Round Trip Delay Trend

 The Technical Round Trip Delay Trend

The target figure for the 95th percentile is 16 seconds and for the 99th percentile it is 20 seconds.

Provider Aborts Count Trend

 Provider Aborts Trend


 Provider Aborts Trend


 Provider Aborts Trend

The target figure is 1 PA per 100 hours of CPDLC.


User Aborts Trend

 User Aborts Trend


 User Aborts Trend


Context Management

DLIC Initiation Logon Counts Trend

 DLIC Initiation Logon Counts Trend


DLIC Contact Transaction Delay Trend

 DLIC Contact Transaction Delay Trend

The target for the 95th percentile delay is 60 seconds and for the 99.9th percentile it is 120 seconds.


CPDLC Ground Initiated Transactions

CPDLC Ground Initiated Transaction Delay

 CPDLC Ground Initiated Transaction Delay Trend

The target for the 95th percentile delay is 60 seconds and for the 99.9th percentile delay it is 120 seconds.

CPDLC Uplink Message Usage Trend

 CPDLC Uplink Message Usage Trend Trend




CPDLC Air Initiated Transactions

CPDLC Air Initiated Transaction Delay

 CPDLC AirInitiated Transaction Delay Trend

The target for the 95th percentile delay is 60 seconds and for the 99.9th percentile delay it is 270 seconds.

CPDLC Downlink Message Usage Trend

 CPDLC Downlink Message Usage Trend Trend