After nine months of canceled orders and the continued grounding of its planes, American aircraft manufacturer Boeing has secured its first order for its 737 Max aircraft. The company says it has received an order for two planes from a carrier in Poland.

The order was made by Enter Air, Poland's largest charter carrier. The Polish company ordered two 737 Max planes - specifically Boeing's 737-8 model. Enter Air was also given the option to purchase two additional jets.

The order underscores a recovery in the confidence of customers in the company's ability to deliver quality products, Boeing's vice president of sales Ihssane Mounir said.

Enter Air currently has a fleet of 22 narrow-body 737NG, or Next Generation 737s, and two 737 Max jets. Boeing said with the additional order and its existing unfilled deliveries Enter Air should have a fleet of 10 737 Max jets. Boeing is reportedly offering Enter Air compensation as a result of late delivery and the grounding of its existing 737 Max jets. The details of the package are confidential.

Enter Air's order is the first new order Boeing has received since November 2019. The last order made for the company's aircraft was for 30 jets and was made at the Dubai Air Show last year. Tukey's SunExpress, a joint venture between Turkish Airlines and Lufthansa, was its largest buyer at the event - ordering 10 Boeing 737 jets.

Boeing 737 Max jets are still the best aircraft available in the world, the Polish airline's director Grzegorz Polaniecki said in a statement. The rigorous tests and checks being done on the airplane by international agencies should further ensure its safety and reliability once they are concluded, he said.

Boeing's 737 Max jets are not legally allowed to return to service because the company is still waiting for regulatory approval. Aviation regulators originally grounded the company's planes in March of last year following two crashes that killed 346 passengers and crew.

Since the grounding, more than 400 orders for the aircraft have been canceled worldwide. Boeing said some of the cancellations were caused by the worldwide travel collapse as a result of the coronavirus pandemic.