UPDATE Despite aviation concerns about possible disruptions caused by wireless carriers now using 5G operations near airports, no major delays were caused by the technology over the holiday weekend, report several news outlets.

One of the biggest concerns had been whether 5G signals would interfere with aircraft radio altimeters that measure height above the ground that are critical when planes land in low visibility. Predictions that interference would cause massive flight groundings failed to come true last year, when telecoms began rolling out the new service. They then agreed to limit the power of the signals around busy airports, giving airlines an extra year to upgrade their planes, Inside Towers reported.   

Transportation Secretary Pete Buttigieg recently told airlines that flights could be disrupted because a small portion of the nation’s fleet has not been upgraded to protect against radio interference.

Transportation Department Spokesperson Kerry Arndt described flight travel as being at “near-normal” levels over the weekend. But he also stressed that the FAA was “working very closely with airlines to monitor summer pop-up storms, wildfire smoke, and any 5G issues.”