WASHINGTON (Reuters) - The Federal Aviation Administration said on Wednesday it may slow flight arrivals at Reagan Washington National Airport after a January 29 collision between a helicopter and an American Airlines regional jet that killed 67 people.

The FAA also said it is increasing operational supervisor staffing from six to eight and was reviewing air traffic control staffing figures at Reagan.

The FAA is also reviewing the airport's "arrival rate of aircraft per hour, which is disproportionately concentrated within the last 30 minutes of each hour."