Airlines check some Boeing 737 engines after fatal Southwest accident

SINGAPORE/PARIS (Reuters) - Airlines began inspecting some Boeing Co 737 engines on Wednesday as an investigation gathered pace into an explosion which killed a passenger on a Southwest Airlines flight in the first fatal U.S. airline accident in almost a decade.This month European regulators ordered checks following lengthy analysis of a non-fatal incident at Southwest two years ago but investigators warn it is too early to say whether the two problems are linked.Southwest Flight 1380 made an em