PARIS ¨C Boeing unveiled a new version of its bestselling 737 aircraft on Monday, injecting life into a faltering civil aviation market as French President Emmanuel Macron flew in to open the world¡¯s biggest air show in Paris.
After years of booming orders driven by increased air travel and more fuel-efficient planes, passenger jet manufacturers are bracing for a slowdown in demand while they focus on meeting tight delivery schedules and ambitious production targets.
In a sign of their more modest expectations, some companies have cut back on staffing and catering at this year¡¯s Paris show and made less space available for the media.

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