Thomas L. Root, who gained notoriety after his small plane crashed into the Atlantic Ocean in 1989, was sentenced Friday to 33 months in prison for falsifying applications before the Federal Communications Commission.

The former communications lawyer had pleaded guilty to counterfeiting, forgery and fraud charges in connection with license applications by FM radio stations.Root, already facing a 15-year sentence after pleading no contest to previous charges, will not have to surrender to federal authorities until June 30 because of his involvement in upcoming fraud trials in North Carolina and Florida.