(Reuters] – U.S. airlines and telecom companies have been fighting over potential effects of 5G services on their aircraft for many weeks. These are in stark contrast with the progress of other services that has generally continued without raising new safety concerns.

This is background information about the dispute. Verizon Communications (NYSE:) and AT&T (NYSE:) agreed on Monday to a two-week delay in using newly acquired wireless spectrum, drawing back from a standoff that threatened to disrupt flights. Although the agreement is expected to prevent most disruptions to flight travel caused by 5G deployment, it will not eliminate all.

What IS the Problem?

For approximately $80 trillion, the U.S. offered mid-range 5G bandwidth for mobile phones companies in the 3.7-3.98GHz spectrum range.

Recent concerns raised by U.S. airlines have been heightened and in November, the Federal Aviation Administration (FAA), issued a formal alert about interference with flight equipment.

Radar altimeters in the aviation industry measure altitude. They operate in the range of 4.2-4.4GHz and there are worries that the buffer is too small to allow telecoms companies to use the frequency.

The White House, airlines, and unions have pressured the companies to postpone deployment due to concerns about interference by 5G with sensitive electronic components such as radio altimeters.

WHY IS THIS POTENTIALLY EXPORTANT TO AVIATIONS?

Radio altimeters can be used to help reduce accidents and collisions. They provide an accurate measurement of ground proximity. These readouts can also be used for automated landings or to detect windhear, which are dangerous currents.

WHAT IS THE DIFFERENCE OF FREQUENCY?

The frequency of the spectrum determines how fast the service will run. Operators want to use higher frequencies in 5G to maximize their potential.

The US auctioned some spectrum in C-Band to satellite radio. However, the move to 5G means that there will be more traffic.

IS IT A PROBLEM ALSO?

The European Union has established standards in 2019 for 5G frequency mid-range in the 3.4-3.8 GHz spectrum, following years of international discussion.

These have all been successfully auctioned off and put to good use by many of the bloc’s 27 members.

European Union Aviation Safety Agency, which supervises 31 countries, stated that the most recent discussion focused on U.S. aviation space. It stated that “At the moment, there is no danger of unsafe interference in Europe.”

AT&T and Verizon have agreed to adopt exclusion zones around many U.S. airports similar to those used in France for six months.

Officials from FAA noted that France uses spectrum (3.6 to 3.8 GHz), which is further away than the spectrum (4.2–4.4 GHz) used in America for radio altimeters. France also has a lower power limit for 5G than the US.

Verizon however stated that it would not utilize spectrum any closer to what France uses for many years.

The 5G Mobile Communication Frequency in South Korea is between 3.42 and 3.7GHz Band. There has not been any interference to radio waves since April 2019, when 5G was commercialized.

At the moment, there are 5G wireless communication stations near airports. However, no problems have been reported.

CTIA, an American wireless trade organization, stated in a filing to the Federal Communications Commission, that almost forty countries in Europe and Asia use the CBand for 5G. No reported effect on radio operators that are operating in the same internationally-designated 4.2-4.4GHz GHz band.

band.”

The FAA and foreign aviation regulators did not express concern about the fact that “each day U.S. planes carrying thousands of Americans land in these countries with no incident” It is the dog who didn’t bark. It is the laws of physics that are identical in the United States and Europe, Asia.

However, airlines warned that if there was no agreement safety precautions could cause disruptions of up to 4 percent daily flight operations. The issue could lead to thousands of cancellations or diverts of daily flights, disrupting the lives of millions of passengers and causing significant disruptions.

United Airlines Chief Executive Scott Kirby, NYSE:), stated that if there was no resolution to the interference issue at the airports of the United States, in bad weather conditions or heavy smog you could “only do visual approaches essentially”.