Logon List

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The Logon List

The "Logon List" is the new name for what was previously called the "White list".

MUAC, Skyguide and DSNA are currently operating a Logon List which is intended to prevent aircraft known to suffer a high PA rate from logging on. Only the aircraft on the Logon List will be able to connect to these ANSPs. The objective of this Logon List is to reduce the rate of PAs suffered by the operational controllers and is likely to remain in place for some considerable time. The Logon List is being coordinated by the DPMF on behalf of the ANSPs and is described in more detail below. No other operational ANSPs are using the Logon List.

Aircraft on the Logon List are observed to suffer from a much lower PA rate than aircraft not on the Logon List. The graph below illustrates the benefits of having updated avionics:

PA rate of Aircraft on the Logon List

The graph above shows the PA rate for aircraft using CPDLC in DFS, NATS, ANS CZ and Slovenia Control airspace. MUAC and Skyguide airspace is not included since they will only allow a logon from aircraft on the Logon List. The graph shows the PA rate of aircraft that are on the Logon List, aircraft that are not on the Logon List as well as the overall aggregated PA rate for all aircraft using CPDLC.

The Logon List does not impact FANS1/A aircraft.

Which aircraft are currently on the Logon List?

The specific list of aircraft is available on the Data link Performance Monitoring Function One Sky Team web site (access is restricted to members of the DPMG).

Which aircraft are eligible to be added to the Logon List?

All aircraft that do not have avionics on the list of 'Logon Ineligible Avionics' (formerly known as the Black List) are eligible for the Logon List. The performance of all aircraft on the Logon List will be monitored. Avionics that are observed to perform poorly will be added to the list of 'Logon Ineligible Avionics'. Avionics which are seen to perform poorly but for which further data is required in order to be conclusive will be added to the list of 'Avionics with performance concerns’ (formerly called the 'Grey List'). The fact that an aircraft is on the Logon List does not guarantee that it performs well; simply that it has not been observed to perform poorly.

Performance Monitoring Criteria

Avionics will be added to the list of 'Logon Ineligible Avionics' if they are observed to have a PA rate 50% worse than comparable aircraft over an extended period of time (4 months) and where there is a reasonable sample size on which to judge performance (at least 250 hours of usage).

‘Comparable aircraft’ means that the aircraft against which the performance is being compared have other factors in common e.g. are using the same ACSP, have other avionic components in common and are operating in similar environments so that we can be confident the avionics is the cause of the poor performance. Avionics where poor performance is observed but for which it is not possible to identify a suitably large set of comparable aircraft will be placed on the list of 'Avionics with performance concerns’ until such time as it is possible to confirm conclusively that the poor performance is due to the avionics (in which case it will be added to the 'Logon Ineligible Avionics') or until it is possible to conclude that the avionics are not the cause of the poor performance. A record of decisions is being maintained.

The criteria to be applied to the 'Logon Ineligible Avionics' and 'Avionics with performance concerns’ lists may evolve as experience is gained.

Logon Ineligible Avionics

Aircraft fitted with avionics identified below are not eligible for the Logon List:

Boeing 747-800 with Rockwell Collins 2100 VDR and CMU900.


• Rockwell Collins 2100/2200/920/4000 VDRs that have not been updated to address the VDR deafness problem. There is a list of the part numbers of the radios that already include the update or the required service bulletins here.

• Honeywell RTA44D with a software version before 064-50000-2052 (or without service bulletin SB23-1570) installed for Airbus aircraft or for Boeing aircraft with radios before part number 064-50000-2001 (i.e. Boeing aircraft with RTA44D VDRs with part number 064-50000-2001 or 064-50000-2032 are eligible for the Logon List).

• Honeywell EPIC avionics not fitted with mod D or greater for the VDR element (or mod S or later for EASy III avionics).

• Thales EVR 750 without version L22 and 'Amendment J' installed.

• Garmin GDR66 before version 2.11.

Data link management units

• Airbus ATSU with software version before CSB8.3

• Spectralux Dlink+ with software version before mod 5

• Garmin Integrated Avionics GIA 63W with software version before 7.72.x.

• Garmin Integrated Avionics GIA 64E with software version before 2.00

• Honeywell EPIC avionics with software version before CMF Block 3.1

• Honeywell Mk2+ CMU with software version earlier than the 998-6063-522 version (e.g. with software ending in -501 or -521)

Avionics with performance concerns

Aircraft fitted with avionics identified below are still currently eligible for the Logon List but their performance appears to be a cause for concern.

• Aircraft fitted with Garmin GDR66 VDR and GIA63W.


• None

Data link management units

• Boeing 777 with AIMS2 version BP V171 or BP17A

• Embraer E545/E550 (Legacy 450/500) aircraft with Rockwell Collins RIU-4010

How do I get my aircraft added to the Logon List?

The process to request your aircraft be added to the logon List has changed to allow aircraft operators to enter the data directly via the DPMF OneSky team web site rather than filling in a spreadsheet and sending it to the DPMF as was previously the case. The tool is called the “Logon List Dashboard” and is available from the DPMF OneSky team (OST) web site. Video tutorials are also available on the DPMF OST site.

Before you can access the “Logon List Dashboard” you first need to have a “One Sky Teams” (OST) account (Eurocontrol Intranet). If you don’t have an OST account yet, please create one here.

If you already have a OST account then you should be able to access the “Logon List Dashboard” now and you will be able to view, update and add details for your aircraft. If you have any problems please email the DPMF.

The Logon List will be updated at every AIRAC cycle. Requests to be added to the Logon List must be received at least three weeks before the next AIRAC date; this is to allow time for the ANSPs to agree the list and update their systems. Following the closure date for applications (see below) the DPMF will prepare a proposed Logon List for agreement by the ANSPs in a meeting which will be held shortly after the closing date for applications. Following agreement by the ANSPs, the DPMF will respond to each applicant indicating if their aircraft will be added to the Logon List and will publish the updated list as described above.

When is the next update due?

The Logon List for 10th September 2020 has now been frozen.

  • Applications for the 8th October 2020 Logon List must be received before noon (CET) on the 16th September 2020.
  • Applications for the 5th November 2020 Logon List must be received before noon (CET) on the 14th October 2020.
  • Applications for the 3rd December 2020 Logon List must be received before noon (CET) on the 11th November 2020.

How can I change the information you hold about my aircraft on the Logon List?

If any of the details about any of your aircraft on the Logon List have changed (including the contact email address) please update it via the "White List Dashboard". if that is not possible then please contact the DPMF.

If my aircraft is not on the Logon List does that mean it is no longer considered compliant with the data link regulation?

In a word 'no'; the Logon List is independent of the regulation. An aircraft can be compliant with the regulation but not eligible for the Logon List.

If my aircraft has 'Logon Ineligible Avionics' how do I get it on the Logon List?

Aircraft with avionics on the 'Logon Ineligible Avionics' list will not be allowed to join the Logon List; so if your aircraft has been removed from the Logon List because it has ineligible avionics it will be necessary to upgrade/change the avionics to some that are eligible in order to rejoin the Logon List.

Do I need to list all Service Bulletins installed on my aircraft?

It is useful if you can list all the service bulletins installed for the avionics listed but it is not essential. It is essential that where appropriate you explicitly include the service bulletin(s) that are required in order to be eligible for the Logon List and not just the latest service bulletin. For example if SB7 is required and SB11 requires the prior installation of SB7, you should still list SB7 even if you have SB11 installed (ideally you would list both SB7 and SB11).