Lear 35a Issue Initial Flight Beeping During Loading Terrain

When I launch FSX SE for the first time and select the Lear 35a, select a flight plan, and weather, during the loading of the scenery, I get fairly loud beeping during the loading of the Terrain, etc. Once the A/C is loaded it goes away. This only happens during the initial FSX SE launch. I tried loading another plane first and then the Lear 35a but the same issue occurs.

 

 

 

Any ideas?