PMDG 737NG Failures

Hey all!

I was looking into purchasing the PMDG 737NG, as the NGX is a bit pricey. I'm curious, does the 737NG support random system failures like the NGX? Or does it only offer a system similar to the default FS failures, where you set a system to fail and you know it will fail at a random time. I'm not necessarily asking about the maitainence failures exclusive to the NGX (although those sound impressive!)

Thanks!