Separately, another Chinese carrier, Donghai Airlines, opted to convert an earlier order for 10 smaller Max jets to 10 Max 10s, as did Malaysia Airlines, while Panama's Copa Airlines converted an order for 15.
Boeing announced firm orders Tuesday for more than 45 planes worth $5.4 billion at list prices, though customers routinely negotiate discounts.
Kevin McAllister, Boeing Commercial Airplanes President and CEO, commented: "We are honored to partner with Avolon for new 737 MAX airplanes as they look to strengthen their position as one of the world's premier commercial airplane lessors".
The 737 MAX continues to be the fastest-selling airplane in Boeing history, accumulating more than 3 700 orders to date.
The 737 MAX family has been created to offer customers exceptional performance, flexibility and efficiency, with lower per-seat costs and an extended range that will open up new destinations in the single-aisle market.
In response, Boeing has designed the 737 Max 10 to be larger than its previous model in order to increase passenger capacity.
Senate GOP health bill would reshape Obama law
John Thune, R-S.D., and Majority Whip John Cornyn, R-Texas, speaks following a closed-door strategy session, at the Ca. Facing uniform Democratic opposition, the Senate plan would fail if just three of the chamber's 52 Republicans defect.
The Max 10 is aimed largely at rival Airbus and its updated A320neo family of narrowbody planes that are a direct competitor to Boeing's 737. All four new Max customers join a group of 10 companies that helped launch the Max 10 at the show. The company indicated it would reveal those customers later this week, adding the Max 10 could be flying for airlines by 2020.
While superjumbos like the A380 - four engine, double-decker giants - were once seen as the future of air travel, many airlines have instead come to prefer cheaper and more agile planes.
AirAsia co-founder Tony Fernandes remained in Paris on Tuesday after signing a data deal with Airbus and picking up an airline award, and could use the opportunity to evaluate jets at attractive prices as new orders wane.
More broadly, the Max family is Boeing's update to its popular 737 line of jetliners that are used mostly for medium- and short-haul flights by airlines across the globe. The partnership will seek to capitalise on Boeing's strength and reach within the industry and the expertise of Monarch Aircraft Engineering (MAEL), which has been providing maintenance, fix and overhaul services to some of the world's best-known airlines for 50 years. "It's an airplane that is a littler larger than the other airplanes in our MAX family", he said.
The Max 10 will be 5 1/2 feet (1.68 meters) longer than the $119.2 million Max 9, now the biggest member of the re-engined 737 aircraft family, which was launched in 2011.




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