fgUntie("/orientation/pitch-deg");
fgUntie("/orientation/heading-deg");
fgUntie("/velocities/airspeed-kt");
+ fgUntie("/velocities/mach");
fgUntie("/velocities/speed-north-fps");
fgUntie("/velocities/speed-east-fps");
fgUntie("/velocities/speed-down-fps");