Five executives of a charter company whose jet crashed after a failed takeoff from Teterboro Airport four years ago conspired to enrich themselves by dangerously over-fueling their planes at airports where fuel could be purchased cheaply, a federal indictment unsealed Wednesday alleges. Federal agents arrested four of the men on Wednesday in Fort Lauderdale, Fla., where the now-defunct Platinum Jet Management LLC was based. One of the men, President and CEO Michael Brassington, is accused of having a direct role in the Feb. 2, 2005, crash by understating the weight of the plane to the flight officer responsible for fueling....