One of our advance recipients of the ATC System experienced a problem which resulted in a False Negative (lack of error when there should have been one) error. 

The error relates to a failure to retrieve warning that was displayed on Masso. Increasing the air pressure in this case was enough to cause it to display, however after reducing the pressure for test/demonstration, and increasing it again to find out at what point a True Positive (error when there should have been one) error displayed, occurred but haven't been able to raise the error again when going as high as 140psi. 

More to follow as the issue is further researched.