Data provider AT&T announced on Tuesday that it has voluntarily agreed to delay turning on 5G on a limited number of towers surrounding airports.

The decision comes after the Federal Aviation Administration voiced concerns about how the 5G rollout may affect several large airlines‘ ability to land in low-visibility situations. The trade organization Airlines for America sent a letter to several federal agencies on Monday, asking for the rollout of 5G to be delayed in the area around select hubs and airports.