Federal Aviation Administration Agenda Item 2.2: Post-Implementation Analysis of Data Link Performance Following Release 15 (R15) Ground Earth Station.

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Federal Aviation Administration Agenda Item 2.2: Post-Implementation Analysis of Data Link Performance Following Release 15 (R15) Ground Earth Station Software Upgrade SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

2 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Contents Summary of Release 15 GES Upgrade Data Link Performance Analysis of CPDLC and ADS-C Technical Performance by GES Before = 2 months prior to month in which upgrade occurred After = 2 months after month in which upgrade occurred Most recent = November/December 2011

3 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Summary of Release 15 GES Upgrade Release 15 (R15): Most recent system software upgrade for ground earth stations interfacing with Inmarsat Classic Aero I-3 satellites Purpose of upgrade: –To improve GES data link delivery capability and aircraft log-on management subsystems –To enhance GES traffic handling and monitoring subsystems GES Identifier and LocationAssociated DSPDate of R15 Upgrade XXE – Eik, NorwayARINC31 January 2010 XXC – Santa Paula, California, USAARINC16 February 2010 AOW2 – Aussaguel, FranceSITA31 May 2010 POR1 – Perth, AustraliaSITA6 July 2010

4 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Data Link Performance Comparison for Eik GES (XXE)

5 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

6 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

7 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

8 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

9 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Summary of Observed Performance Following R15 Upgrade Eik GES: –Improvement in the ACTP was not observed immediately following the R15 upgrade, but the most recent data does show a noticeable improvement in performance for CPDLC transactions –ADS-C downlink latency performance is observed to have degraded in the period immediately following the upgrade as well as in the most recent period

10 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Data Link Performance Comparison for Santa Paula GES (XXC)

11 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

12 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

13 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

14 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

15 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Summary of Observed Performance Following R15 Upgrade Santa Paula GES: –Improvement can be observed for both the ACTP for CPDLC transactions and ADS-C downlink latency performance for ADS-C downlink messages –Improvement shown to be stable between the period immediately following the upgrade and the most recent period of observation for both performance measures

16 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Data Link Performance Comparison for Aussaguel GES (AOW2)

17 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

18 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

19 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

20 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

21 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Summary of Observed Performance Following R15 Upgrade Aussaguel GES: –Improvement can be observed for both the ACTP for CPDLC transactions and ADS-C downlink latency performance for ADS-C downlink messages –Continued improvement shown between the period immediately following the upgrade and the most recent period of observation for both performance measures

22 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Data Link Performance Comparison for Perth GES (POR1)

23 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

24 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

25 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

26 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012

27 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Summary of Observed Performance Following R15 Upgrade Perth GES: –Slight improvement can be observed for both the ACTP for CPDLC transactions and ADS-C downlink latency performance for ADS-C downlink messages –Continued improvement shown between the period immediately following the upgrade and the most recent period of observation for ACTP –Improvement shown to be stable between the period immediately following the upgrade and the most recent period of observation for the ADS-C downlink latency performance

28 Federal Aviation Administration SOCM/2 IP/nn Attachment A Bangkok, Thailand 8-10 February 2012 Conclusions Overall improvement in data link performance at GES level following R15 upgrade Improvement most noticeable at the Santa Paula and Aussaguel GES In general - upgrade appears to have had more of an impact on the ACTP than on the ADS-C downlink latency performance