diff --git a/AircraftSchedule.proto b/AircraftSchedule.proto
index 4bdbe8f..561b20c 100644
--- a/AircraftSchedule.proto
+++ b/AircraftSchedule.proto
@@ -8,5 +8,6 @@ message AircraftSchedule {
     bool fixed                  = 2; // indicates if the sequence is fixed
     string arrivalRoute         = 3; // planned arrival route
     string arrivalRunway        = 4; // planned arrival runway
-    repeated Waypoint waypoints = 5; // contains the planned waypoints with the PTA
+    PerformanceData performance = 5; // used performance data
+    repeated Waypoint waypoints = 6; // contains the planned waypoints with the PTA
 }
diff --git a/BaseTypes.proto b/BaseTypes.proto
index 3f6d6fa..a386456 100644
--- a/BaseTypes.proto
+++ b/BaseTypes.proto
@@ -20,6 +20,13 @@ message Waypoint {
     int32 groundSpeed       = 5; // The target ground speed
 }
 
+message PerformanceData {
+    int32 iasAboveFL240 = 1; // The speed above FL240
+    int32 iasAboveFL100 = 2; // The speed above FL100
+    int32 iasBelowFL100 = 3; // The speed below FL100
+    int32 iasApproach   = 4; // The minimum approach speed
+}
+
 message Dynamics {
     int32 groundSpeed   = 1; // given in knots
     int32 heading       = 2; // reported heading