US aviation authorities are contemplating drastic measures to curb development at United Airways Holdings Inc., together with stopping the provider from including new routes, following a collection of security incidents.The Federal Aviation Administration has mentioned short-term actions it could take with the airline’s management in current days, in keeping with folks with data of the matter. Along with route restrictions, United could also be barred from flying paying prospects on newly delivered plane, stated the folks, who requested to not be recognized describing the closed discussions.