hi allcan someone please tell me how i put back the OM and IM sounds which have disappeared for a while knowi like to hear the Outer Marker sounds when im on finals, this is for the PMDG 747thanks.

Hello~For MD-111. Go to the radio panel of your MD-11.2. Locate a knob called "RADIO MKR", which is just above the TCAS panel.3. On the top of the knob, press the left button of your mouse to "pull up (activate)" the knob.For 7471. Go to the radio panel of your Boeing 747.2. Locate a knob with L, C, R, and MKR markings around it (the default position is L), which is in the second panel above the autobrakes panel.3. Press the right button of your mouse to turn the knob to the MKR mode.4. After that, click the APP button which is just beside the knob, to illuminate a small light.The OM & IM sounds should work properly after that.

hello Tomthanks for your detailed explanations.clayton