LISBON – The Fairey single engine float plane is displayed as if taking off over the Tejo River. But when Gago Coutinho and Sacadura Cabral departed Lisbon in the first crossing of the South Atlantic by air in 1922 they were not flying in this particular airplane. Their historic feat was only accomplished in a three airplane relay, the first two planes were lost along the way. But in such perseverance is aviation history (and aviation safety) made. This was made clear to me again on Sunday. As I was learning about these Portuguese aviation pioneers and their ultimately successful travails in flying from Portugal to Brazil, air crash investigators with the French Bureau d’Enquetes et d’Analyses or BEA were rewarded by their own travails in the South Atlantic with the discovery of wreckage from the Airbus A330 that flew as Air France Flight 447 . The so-far mysterious crash of Flight 447 from Rio de Janeiro to Paris nearly two years ago, has been as loaded with drama as it has been light on details. Remember the plane carrying 228 people was at cruise altitude when, after a few minutes of automated maintenance warnings to Air France through the ACARS system , the plane disappeared. Since then, the only operating theory is that ice in the speed-measuring pitot tubes caused incorrect readings by the autopilot leading to the crash. All Thales pilot tubes were ordered replaced by aviation authorities. Despite the fact that no one yet knows what happened to Flight 447, the French government recently filed manslaughter charges against Airbus and Air France. You read that correctly. This is not an unprecedented step for the French. Continental Airlines and an employee were found guilty of manslaughter in France just three months ago for the crash in Paris of the supersonic Concorde in 2000 that killed 113 people. (That ruling that got remarkably little attention, frankly. Continental says it will appeal.) Anne Candies during the April 2010 search It is quite obvious that everyone wants to know more about what happened to Flight 447, making the $40 million plus cost of the repeated underwater searches bearable – in spite of the continual raising and dashing of hopes from the previous fruitless searches . The Portuguese naval aviation pioneers Coutinho and Sacadura left Lisbon in March 1922 on a three-month effort to fly to Rio de Janeiro using a sextant they designed for air navigation. The journey required multiple stops for fuel along the way and cost three airplanes.