Boeing Co. is preparing to send a safety warning to operators of its new 737 Max jets in response to the investigation of last week’s fatal crash off the coast of Indonesia that left 189 dead, said a person familiar with the matter.
The bulletin from Boeing will alert airlines that erroneous readings from a flight-monitoring system can cause the planes to abruptly dive, said the person, who asked not to be named discussing details of the manufacturer’s plans. Boeing will warn pilots to follow an existing procedure to handle the problem, the person said.
The Lion Air 737 Max 8 dove into the Java Sea on Oct. 29 minutes after takeoff, nosing downward so suddenly that it may have hit speeds of 600 miles an hour before slamming into the water. The pilots radioed a request to return to Jakarta to land, but never turned back toward the airport, according to Indonesia’s National Transportation Safety Committee and flight-track data. The committee said they were dealing with an erroneous airspeed indication.