The Federal Aviation Administration confirmed Tuesday that it has approved steps necessary for flights to resume using the planes, which have engines made by Pratt & Whitney.
Last week, United senior vice president Patrick Quayle said the airline would start using a handful of the planes on routes within the U.S., and then add them on flights to Hawaii and international destinations starting in early to mid-June. United plans to be flying about 20 of them by the end of June, he said.
The planes were grounded in February 2021 after a Hawaii-bound plane suffered an engine failure shortly after takeoff and rained parts over the Denver area. The pilots were able to return to the Denver airport and land safely.
Shares of United Airlines Holdings Inc. rose more than 6% in midday trading, extending earlier gains after the airline raised its passenger revenue outlook due to rising demand for travel.
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