I have recently purchased the 737NG and have had several great flights with it. I belong to a popular virtual airline and enjoy flying on VATSIM. I have nearly 300 hours of VATSIM flying.On a flight from KSFO to KDFW all was going well with the FMC running the show. As I neared the TOD, the FMC and all the CRT screens for the PMD et.al. went blank. As well, the radios will not change freqs and the gear would not operate. I use FSInn and understand from another forum that FSInn causes problems for the PMDG radio panel. However, I have not found any discussion regarding the panels losing functionality late in flight. There have been several explanations for them never functioning at all but not the behavior I experienced.I checked avionics in the default. I reprogrammed the flight and tried it again. Not at the precise moment of the first instance, but close enough, the same failurs occured.This is not a freeze up of the program. On the second attempt, I was able to visually reckon the aircraft to KDFW. I actually thought I was going to make it until I then discovered the gears would not operate.None of these failures occured when flying offline. So far, the only problems have occurred while connected to VATSIM.Any insight from the PMDG team would be appreciated. I really like your product and hope to be able to enjoy it while flying online.

Ms/Mr Nameless,Welcome to the forum. Please sign your posts with your name. It's always nice to know who we are talking to.Regardless of your statement that this only happens online it seems like this is a case of running the aircraft on battery. Do you have the generators online?Hope it helps,

Sorry I forgat to sign off.I will try to make sure generators are online and try another flight.Thanks for your help.Morgan Lusk