File photo of a Boeing B737, specifically 737-400 cargo cargo plane.

Nicolas Economou | NurPhoto | Getty Images

A Boeing 737 cargo plane made an emergency landing off the coast of Honolulu early Friday after pilots reported engine problems, the Federal Aviation Administration said.

Both pilots were rescued, the FAA said.

The plane was not a 737 Max, the plane officers kept on the ground for 20 months after two fatal crashes up until last November.

“The pilots had reported engine problems and were trying to return to Honolulu when they were forced to land the plane in the water,” the FAA said. “Based on preliminary information, the US Coast Guard rescued both crew members. The FAA and the National Transportation Safety Board will investigate.”

The FAA said Transair Flight 810 made the forced landing around 1:30 a.m. local time on Friday.

The Hawaiian cargo airline, which specializes in inter-island cargo flights, did not immediately return a request for comment.

“We are aware of the reports from Honolulu, Hawaii, and are closely monitoring the situation,” said Boeing. “We are in contact with the US National Transportation Safety Board and are working to gather more information.”

The 737-200 aircraft was built in 1975, according to flight tracking website Flightradar24.

Freight planes are often decades old and have been converted to cargo after years of passenger transport.

Boeing stock lost less than 1% in Friday midday trading, making up some of the day’s losses after news of the crash.