The provisional order marks the biggest aircraft investment by a Mexican carrier in the country’s history, Aeromexico said in a statement.
"This investment demonstrates the commitment Grupo Aeromexico shareholders have pledged to the country and its confidence in Mexico's macroeconomic environment and future," said Aeromexico chairman Jose Luis Barraza.
According to Reuters, Aeromexico intends to buy 90 737 MAX 8 planes and 10 787-9 Dreamliners.
The Dreamliners will begin arriving in the summer of 2013 while the 737s will land in 2018.
Dow Jones Newswires said the planes should enable Aeromexico to fly further and more efficiently, thereby cutting maintenance costs.
“This equipment represents a jump in Aeromexico's fleet technology, and will give us one of the youngest and most efficient fleets in the world, significantly reducing the impact on the environment in addition to consolidating the group's fleet into just two types of cabins," Aeromexico chief executive Andres Conesa said.
Aeromexico operates more than 550 domestic and international flights every day, Agence France-Presse reported.
It carried 14 million passengers in 2011.
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