Regulators at the Federal Aviation Administration are tightening safety rules in congested airspace around major airports, suspending the use of visual separation between planes and helicopters.
helicopters
Posted inNPR
What might have caused the helicopter crash that killed Iran’s president
Bad weather may have been a cause of Sunday’s crash that killed Ebrahim Raisi. But mechanical issues, possibly exacerbated by a lack of spare parts due to U.S. sanctions, could also be a factor.
