Boeing has seen orders for its airliner models pour in during a week when the Federal Aviation Administration approved Boeing's newest 737 model, the 737-900ER, for commercial service. After winning firm orders from Virgin Atlantic Airways for 15 Boeing 787s and from Air Canada for 23, adding to Air Canada's earlier commitment for 14, Boeing won a repeat order yesterday from Indian carrier SpiceJet for 10 737-800s. New Delhi-based SpiceJet had already ordered 30 737-800s in two previous deals in February 2005 and August 2006. Yesterday, Boeing revealed that Russia's S7 Group, which operates S7 Airlines?also had ordered 10 Boeing...