Historically , pilots were paid " segment hours " which were based on en route ( or takeoff-to-landing ) times as opposed to block ( or gate-to-gate ) times and have been suspected of being part of an inducement for under reporting . Logging of true block hours could be detrimental to a pilot 's pay . Whereas , most carriers pay pilots based on block time , since it is what FAA flight time limits are based on , Gulfstream did not . An incentive existed to under report block time by keeping it as close to en route time as possible thereby permitting pilots to get paid for the most en route hours in a given period . Delays that increased block times not only reduced the crewmember 's utility to Gulfstream but also limited his pay . In 2009 , Gulfstream International Airlines came under additional scrutiny due to three fatal crashes that all involved pilots that were trained at the Gulfstream Training Academy ( its sister company ) , the last one in February 2009 , where 50 died on Colgan Air Flight 3407 near Buffalo , NY
Colgan Air Flight 3407
Colgan Air Flight 3407
Gulfstream International Airlines