A British Airways 737 MAX in storage on the ramp. (Photo: AirlineGeeks | Katie Bailey)

The International Airlines Group's shareholders have approved the order for 50 Boeing planes. The order for the aircraft has been confirmed asfirm by Boeing and IAG will have the option to buy 100 more. It was noted in the initial announcement that the order was for 25 Boeing planes with deliveries expected to start in 2023.

The addition of new Boeing737s is an important part of IAG's short-haul fleet renewal. The new generation aircraft are more fuel efficient than their predecessors, which is in line with our commitment to achieve net zero carbon emissions by the year 2050.

British Airways is part of IAG. All airlines are expected to use the aircraft.

The B737-8 MAX 200 can accommodate up to 200 passengers, while the B737 MAX 10 can accommodate up to 230 passengers in a single-class configuration. Fuel efficiency for both aircraft is said to be on average 14 percent more fuel-efficient than today's most efficient Next-Generation Boeings and 20 percent more efficient than the original Next-Generation Boeings when they were first introduced.

Ihssane Mounir, Boeing's senior vice president of Commercial Sales and Marketing, said, "We welcome today's decision by IAG's shareholders to approve a firm order for 50737-8-200s and737-10s, with options for 100 more, and we

The announcement comes a day after Boeing Chief Executive Dave Calhoun told CNBC he was confident that the company would get an extension to a deadline from the United States Congress on certifying the B737 MAX7 and B737 MAX 10. It is important for the aircraft manufacturer to meet the deadline or get an extension in order to avoid delays for airline customers.

If FAA certification was granted, Boeing would expect the MAX 10 to enter into service later this year or in the next decade.

Boeing would have to make sure that the aircraft have modern cockpit alerting systems to be certified by the FAA if the deadline is not met. The two fatal MAX aircraft crashes in Indonesia and Ethiopia resulted in the adoption of certification reforms by the United States Congress.