Boeing's 737 is its most popluar model by far although overall commercial aircraft deliveries did not hit 2015 levels last year, it said. Stephen Brashear / AFP
Boeing's 737 is its most popluar model by far although overall commercial aircraft deliveries did not hit 2015 levels last year, it said. Stephen Brashear / AFP

Boeing fails to hit heights of 2015 on orders for last year