Hello I've been doing several flights in the Challenger and I love it. It's a fantastic product. However the past couple of flights I get a MSG on my FMC saying "XTALK FAIL" and my flight plan info won't carry over to all FMCs. Also even with my Simbrief ID it won't pick up my flight plan from sim brief it just says "REQ PENDING" for 10-15 mins then goes away.