If, when the CS767 first loads into FSX, you see 000 displayed on the IAS/MACH Indicator and 00000 is displayed on the Altitude Indicator (see attached image), this usually means it has not loaded correctly. Reload the ALT > A > Enter > Enter and they should look right, then the switches on the OH panel should be working correctly. I have assigned a keyboard command (CTRL+SHIFT+R) to Aircraft (reload).

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