LONDON – The FAA has provisionally cleared about 90% of US commercial aircraft as they’re now somewhat shielded from the interference caused by the 5G network towers near the airports.

The FAA has expanded the roster of aircraft that are allowed to land in low-visibility weathers in the presence of 5G radio waves to include several models of regional jets, according to a notice on the agency’s website.

The FAA’s approvals don’t cover each and every plane at every airport across the country, and are subject to revisions each month as the agency reviews the addition of new 5G cell towers, the agency said. They could also be limited if wireless companies increase power levels.

New wireless phone services that began on January 19 broadcasting frequencies near those used by aircraft have prompted the FAA to raise concerns about radio interference.

The latest action by the agency combined with an agreement by wireless companies to temporarily limit their power levels and the placement of cell towers near airports has meant that the most severe impacts have been avoided for now.

The issue could return, however, and FAA approvals are revoked, if the wireless carriers expand 5G power and tower locations in the coming months.

The FAA has separately issued directives restricting flights on the Boeing 777 and 747-8 aircraft as a result of potential interference from 5G. however, both aircraft are covered in waivers that will likely limit impacts from the new directives.