“The pilots had reported engine trouble and were attempting to return to Honolulu when they were forced to land the aircraft in the water,” the U.S. Federal Aviation Administration (FAA) said in a statement.
Shares of Boeing fell 2 percent.
“According to preliminary information, the U.S. Coast Guard rescued both crew members.”
The plane was operated by Rhodes Express.
CNBC earlier reported that a Boeing 737 had come down in the water.
Boeing was not immediately available for comment.
Boeing’s 737 MAX was cleared to fly by regulators late last year after a 20-month grounding following two accidents that killed hundreds of people.
By Ankit Ajmera