Nov 6 (Reuters) - United Airlines said on

Thursday it plans to cut 4% of its flights Friday through Sunday

after the Federal Aviation Administration directed reductions at

40 high-traffic U.S. airports to address air traffic control

safety concerns.

The FAA said it planned to impose 10% cuts starting on

Friday but then told airlines it would begin with 4% cuts and

ramp up to 10% next week.

United operates around 4,500 flights a day, so the cuts

are expected to result in less than 200 daily cancellations, the

carrier confirmed.