On Saturday, June 8, 2019 at 6:36:22 AM UTC-7, wrote:
I recently installed Trig-22, TN-72 in my glider and passed ground test. After 3 competition days I pulled free FAA reports- two days are fine and in one day I have red value in NIC column (integrity and accuracy) of 0.41% fail. PAPR user guide does not say much what can be cause of this fail. Is anyone experienced willing to help evaluate failed report? Should I turn off TN-72 on my panel even only 0,42% in one flight was faulty(red) report out of 3 flights of 13 hours? Thank you. pavel

It was probably because you were in a bad ADS-B reception area, this is common I would not worry about it.

Richard
www.craggyaero.com