CONTENTS

 1     Structure of the Report 2
 2     Methodology  3
 3     Proposed criteria for sharing assessment 4
 4     List of characteristics used in the compatibility analyses  4
5 Conclusion  6
        5.1 Impact into FSS conclusion  6
        5.2     Impact from FSS conclusion  6
                  5.2.1     Impact into AMS for telemetry limited to flight testing  6
                  5.2.2     Impact into AM(R)S  6
                  5.2.3     Impact into AMS for security  6
Annex 1  Aeronautical mobile (R) service     7
 1     Introduction  7
 2     System characteristics  8
        2.1     Assumed aviation system   8
 3     Airport LAN characteristics  8
 4     Compatibility assessment results  11
Relevant cells for HIBLEO-4 FL     11
 5     Conclusion  12
Annex 2  Aeronautical mobile telemetry     12
1 Introduction  12
 2     AMT sharing analyses  13
        2.1     A detailed analysis based on AMT operations in the 5 091-5 150 MHz band  13
Interference from AMT into the FSS service     15
Interference from FSS feeder link transmitters into the AMT system     19
        2.2 Additional analysis for the 5 091-5 250 MHz band  19
a)     Aeronautical telemetry system characteristics: 19
b)     Operational characteristics: 20
c)     Preliminary assessment of AMT interference into the existing non-GSO satellite systems operating under the FSS allocation:     20
        2.3 Conclusion  24
Annex 3  Civil aeronautical security requirements     25
1 Introduction  25
2 Key features of the new aeronautical security system   25
3 Radio spectrum compatibility issues for security applications  26
        3.1 Issues  26
        3.2 Compatibility with FSS  26
                  3.2.1 Impact of aeronautical security into FSS  26
                  3.2.2 Impact of FSS into aeronautical security  33
        3.3 Sharing with FSS general conclusions  33