Uplink Error Trend

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The Uplink Error Trend graph is available from the DPMF Dashboards and shows what percentage of the total uplink messages each type of uplink error message represents. The number of each type of uplink error message is shown over a 12 month period as a percentage of the total number of uplink messages.

Examples of Uplink error messages

  • ATC TIMEOUT - REPEAT REQUEST
  • CONTROLLER TERMINATED CPDLC - USE VOICE
  • CPDLC MESSAGE FAILED - USE VOICE
  • CPDLC MONITOR MESSAGE FAILED - USE VOICE ON FREQ: 120.935
  • CPDLC TRANSFER NOT COMPLETED - REPEAT REQUEST
  • DOWNLINK DELAYED - USE VOICE
  • DOWNLINK MESSAGE REJECTED - SEND 2 ELEMENTS MAX.
  • DOWNLINK TIMESTAMP INDICATES FUTURE TIME
  • DOWNLINKED RESPONSE RECEIVED AFTER TIMEOUT - USE VOICE
  • ELEMENT COMBINATION REJECTED - USE VOICE
  • LEVEL REQUEST REJECTED - REPLY TO LEVEL UPLINK FIRST
  • ROUTE REQUEST REJECTED - REPLY TO ROUTE UPLINK FIRST
  • TOO MANY LEVEL REQUEST - EXPECT ONLY ONE REPLY
  • TOO MANY ROUTE REQUEST - EXPECT ONLY ONE REPLY
  • TRANSFER SUPPORT REQUEST REJECTED - REPLY TO TRANSFER SUPPORT UPLINK FIRST