Yesterday I took the PC-21 to the field to run the turboprop, range test, taxi test, and maiden if everything went well. Unfortunately, the tack welds on one of the exhaust hold down straps broke during the range test so I didn't want to take a chance and maiden it like that.
I sent a message to Danny from Chief Aircraft (place where I purchased the PC-21) to see about getting the exhaust replaced under warranty but haven't heard back yet.
Kirk