SINGAPORE, February 24-Pilots from Singapore Airlines give the thumbs up to Bombardier's Learjet 45 at the Asian Aerospace 2000 here in Singapore today. 4 Learjet 45 are operated by Singapore Airlines, which has been a Learjet owner and operator since November 1991. SIA's Learjet 45 is specially configured for pilot training, allowing it to train and graduate pilots into its fleet of long-range, widebody airliners. With the pilots is George Laforme, VP Sales, Asia Pacific, Bombardier Business Aircraft.