2009 could be one toughest years in aviation history. - According to the International Air Transport Association (IATA), airlines registered losses of $5bn in 2008. For the whole of the year, international freight traffic declined by 4.0%, whilst the number of airline passengers grew slightly (1.6%). For 2009 losses have been estimated at $2.5bn. The IATA is also predicting a fall of 3.0% in airline passengers, a 5.0% fall in freight and a 3.0% fall in dividends. Industry revenue is expected...