| Most Used Downlink Msg Elements Jan09 to Dec09 | Msg# | TOTAL | %Used |
| WILCO | 0 | 204861 | 40.604 |
| POSITION REPORT [positionreport] | 48 | 140293 | 27.806 |
| REQUEST CLIMB TO [level] | 9 | 25955 | 5.144 |
| CLIMBING TO [level] | 29 | 25427 | 5.040 |
| REQUEST WEATHER DEVIATION UP TO [dist][direction] OF ROUTE | 27 | 18588 | 3.684 |
| [freetext] | 67 | 18310 | 3.629 |
| ROGER | 3 | 17624 | 3.493 |
| BACK ON ROUTE | 41 | 9693 | 1.921 |
| REQUEST [level] | 6 | 9003 | 1.784 |
| LEVEL [level] | 37 | 7867 | 1.559 |
| REQUEST BLOCK [level] TO [level] | 7 | 6948 | 1.377 |
| DEVIATING [dist] [direction] OF ROUTE | 80 | 4717 | 0.935 |
| DUE TO AIRCRAFT PERFORMANCE | 66 | 2966 | 0.588 |
| DUE TO WEATHER | 65 | 2344 | 0.465 |
| REQUEST DIRECT TO [position] | 22 | 2025 | 0.401 |
| PRESENT SPEED [speed] | 34 | 1396 | 0.277 |
| REQUEST DESCENT TO [level] | 10 | 741 | 0.147 |
| STANDBY | 2 | 647 | 0.128 |
| AT [position] REQUEST CLIMB TO [level] | 11 | 538 | 0.107 |
| REQUEST OFFSET [dist] [direction] OF ROUTE | 15 | 519 | 0.103 |
| REQUEST [speed] | 18 | 461 | 0.091 |
| WHEN CAN WE EXPECT HIGHER ALTITUDE | 53 | 442 | 0.088 |
| AFFIRM | 4 | 388 | 0.077 |
| DESCENDING TO [level] | 30 | 344 | 0.068 |
| NEXT WAYPOINT ETA [time] | 43 | 279 | 0.055 |
| UNABLE | 1 | 273 | 0.054 |
| REQUEST VOICE CONTACT | 20 | 197 | 0.039 |
| REQUEST CRUISE CLIMB TO [level] | 8 | 175 | 0.035 |
| REQUEST CLEARANCE | 25 | 168 | 0.033 |
| REACHING BLOCK [level] TO [level] | 76 | 166 | 0.033 |
| AT PILOTS DISCRETION | 75 | 163 | 0.032 |
| WHEN CAN WE EXPECT BACK ON ROUTE | 51 | 146 | 0.029 |
| REQUEST [routeclearance] | 24 | 121 | 0.024 |
| ASSIGNED ROUTE [routeclearance] | 40 | 103 | 0.020 |
| AT [time] REQUEST CLIMB TO [level] | 13 | 100 | 0.020 |
| WHEN CAN WE EXPECT CRUISE CLIMB TO [level] | 54 | 89 | 0.018 |
| NEGATIVE | 5 | 84 | 0.017 |
| AT [time] [distance] [tofrom] [position] | 78 | 78 | 0.015 |
| PASSING [position] | 31 | 56 | 0.011 |
| AT [position] REQUEST OFFSET [dist] [direction] OF ROUTE | 16 | 47 | 0.009 |
| REQUEST VOICE CONTACT [freq] | 21 | 21 | 0.004 |
| REACHING [level] | 72 | 20 | 0.004 |
| LEAVING [level] | 28 | 19 | 0.004 |
| ASSIGNED LEVEL [level] | 38 | 18 | 0.004 |
| REQUEST HEADING [degrees] | 70 | 17 | 0.003 |
| REQUEST [procedurename] | 23 | 14 | 0.003 |
| PRESENT LEVEL [level] | 32 | 14 | 0.003 |
| WHEN CAN WE EXPECT LOWER ALTITUDE | 52 | 14 | 0.003 |
| AT [position] REQUEST DESCENT TO [level] | 12 | 11 | 0.002 |
| ASSIGNED BLOCK [level] TO [level] | 77 | 8 | 0.002 |
| WHEN CAN WE EXPECT [speed] | 49 | 7 | 0.001 |
| NEXT WAYPOINT [position] | 42 | 6 | 0.001 |
| AT [time] REQUEST OFFSET [dist] [direction] OF ROUTE | 17 | 4 | 0.001 |
| ASSIGNED SPEED [speed] | 39 | 3 | 0.001 |
| PAN PAN PAN | 55 | 3 | 0.001 |
| ENSUING WAYPOINT [position] | 44 | 3 | 0.001 |
| REQUEST [speed] TO [speed] | 19 | 3 | 0.001 |
| MAINTAIN OWN SEPARATION AND VMC | 74 | 2 | 0.000 |
| [remainingfuel] OF FUEL AND [remainingsouls] SOULS ON BOARD | 57 | 2 | 0.000 |
| PRESENT GROUND TRACK [degrees] | 36 | 2 | 0.000 |
| DESCENDING TO [level] | 61 | 2 | 0.000 |
| REQUEST GROUND TRACK [degrees] | 71 | 1 | 0.000 |
| SQUAWKING [beaconcode] | 47 | 1 | 0.000 |
| MAYDAY MAYDAY MAYDAY | 56 | 1 | 0.000 |
| DIVERTING TO [position] VIA [routeclearance] | 59 | 1 | 0.000 |
| REQUEST VMC DESCENT | 69 | 1 | 0.000 |
| PRESENT POSITION [position] | 33 | 0 | 0.000 |
| AT [time] REQUEST DESCENT TO [level] | 14 | 0 | 0.000 |
| [freetext] | 68 | 0 | 0.000 |
| CANCEL EMERGENCY | 58 | 0 | 0.000 |
| WHEN CAN WE EXPECT [speed] TO [speed] systems> | 50 | 0 | 0.000 |
| PRESENT HEADING [degrees] | 35 | 0 | 0.000 |
| REPORTED WAYPOINT [time] | 46 | 0 | 0.000 |
| REQUEST WEATHER DEVIATION TO [posn] VIA [routecnce] | 26 | 0 | 0.000 |
| REPORTED WAYPOINT [position] | 45 | 0 | 0.000 |
| OFFSETTING [dist][direction] OF ROUTE | 60 | 0 | 0.000 |
| ATIS [atiscode] | 79 | 0 | 0.000 |
| Totals | Totals | 504540 | 100.000 |