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 and Skyguide are providing data) for all ATN equipped aircraft for May 2013. As the tool to create these metrics is still under test and validation not all the metrics are available yet. There is a corresponding set of graphs for FANS equipped aircraft and a further limited set of graphs that show the trend of these metrics over the preceding year.
Click on the graph to bring up a description of what the metric is measuring.
General Performance Measures
Technical Round Trip Delay (Sept 2013)
Trend over past year.
Provider Aborts Count (August 2013)
Total Provider Aborts
|
No. of CPDLC Sessions
|
PAs as a Percentage
|
1022 |
6020 |
16.00%
|
|
Trend over past year.
CPDLC Technical Error Counts
Error Message
|
Total
|
Not |
|
Available |
|
Yet |
|
|
Trend over past year.
Context Management
DLIC Initiation Logon Counts (August 2013)
Trend over past year.
DLIC Contact Transaction Delay (August 2013)
Trend over past year.
DLIC Contact Continuity
DLIC Contact Expired Transactions
|
Total No. Of DLIC Contact Transactions
|
Continuity
|
Not |
available |
yet
|
|
Trend over past year.
CPDLC Ground Initiated Transactions
CPDLC Ground Initiated Transaction Delay (August 2013)
Trend over past year.
CPDLC Ground Initiated Continuity
Expired Events
|
Total Transactions
|
Continuity
|
Not |
yet |
available
|
|
Trend over past year.
CPDLC Uplink Message Usage (August 2013)
Trend over past year.
Uplink Error Counts (August 2013)
Error Text
|
Count
|
ATC TIMEOUT - REPEAT REQUEST |
95
|
CONTROLLER TERMINATED CPDLC - USE VOICE |
11
|
CPDLC MESSAGE FAILED - USE VOICE |
137
|
CPDLC TRANSFER NOT COMPLETED - REPEAT REQUEST |
6
|
DOWNLINK DELAYED - USE VOICE |
97
|
DOWNLINK MESSAGE REJECTED - SEND 2 ELEMENTS MAX. |
1
|
DOWNLINK TIMESTAMP INDICATES FUTURE TIME |
159
|
DOWNLINKED REQUEST CLOSED BY CONTROLLER - USE VOICE |
59
|
DOWNLINKED RESPONSE RECEIVED AFTER TIMEOUT - USE VOICE |
22
|
ELEMENT COMBINATION REJECTED - USE VOICE |
5
|
LEVEL REQUEST REJECTED - REPLY TO LEVEL UPLINK FIRST |
2
|
REQUEST AGAIN WITH NEXT UNIT |
1
|
ROUTE REQUEST REJECTED - REPLY TO ROUTE UPLINK FIRST |
7
|
TOO MANY LEVEL REQUEST - EXPECT ONLY ONE REPLY |
1
|
TOO MANY ROUTE REQUEST - EXPECT ONLY ONE REPLY |
2
|
TOO MANY ROUTE REQUESTS - EXPECT ONLY ONE REPLY |
1
|
TRANSFER SUPPORT REQUEST REJECTED - REPLY TO TRANSFER SUPPORT UPLINK FIRST |
5
|
|
Trend over past year.
CPDLC Air Initiated Transactions
CPDLC Air Initiated Transaction Delay
Trend over past year.
CPDLC Air Initiated Continuity
Expired Events
|
Total Transactions
|
Continuity
|
Not |
available |
yet
|
|
Trend over past year.
CPDLC Downlink Message Usage (August 2013)
Trend over past year.
Downlink Error Counts (August 2013)
Error Text
|
Count
|
AIR SYSTEM TIMEOUT |
87
|
AIRCREW HAS INHIBITED CPDLC |
87
|
UPLINK DELAYED IN NETWORK AND REJECTED. RESEND OR CONTACT BY VOICE |
564
|
|
Trend over past year.