By David Shepardson

WASHINGTON (Reuters), Federal Communications Commission Chair Jessica Rosenworcel stated Thursday that the Federal Communications Commission is optimistic about solving questions regarding potential impacts of 5G Wireless Communications on aviation safety.

“You asked me whether I believe we can resolve these issues through mitigation. Rosenworcel replied, saying “yes” and adding that there are continuing discussions.

Earlier this month, AT&T (NYSE:) and Verizon Communications After safety concerns were raised by the Federal Aviation Administration (FAA), (NYSE:), NASDAQ agreed to postpone commercial launch C-band wireless service on Jan. 5.

FAA Chief Steve Dickson declared Tuesday, “We will figure it out,” but did not specify what mitigations were needed in order to address safety issues.

An FAA bulletin dated Nov. 2 warned that interference could be caused by 5G deployment with sensitive electronics such as radio altimeters.

According to people briefed, potential mitigation measures included small areas of exclusion around airports, a tilting of antennas downwards, and lower power levels in the vicinity of airports to decrease the amount of energy from the sky.

The White House, FAA and FCC will continue to meet Friday in an effort to address concerns. According to officials, they are trying to achieve agreement before December 5, which would be roughly the date when the FAA could issue an official directive to airlines about safety concerns.

A coalition of wireless and other trade groups on Thursday told the White House “further delays in launching C-Band could have serious consequences for our nation’s ability to leverage the economic growth associated with 5G” and argue there have no been C-Band aviation safety issues in other countries using the spectrum.

Earlier known as Radio Technical Commission for Aeronautics and RTCA, the 2020 report on 5G aviation raised concerns. Tuesday’s report was defended by RTCA, who stated “calls for dismissal are not supported by hard science and engineering analysis.”

Boeing (NYSE) Co., Airbus SE(OTC:) and U.S. Airlines have urged the administration to address concerns. They claim 5G could cause harmful interference to radio altimeters (which are critical systems that every helicopter and commercial plane uses), and they need to be addressed immediately.