Lion Air Boeing aircraft A Lion Air aircraft is taking off from Soekarno-Hatta International Airport in Cengkareng, Indonesia. Aircraft and engine manufacturers routinely send bulletins to air carriers noting safety measures and maintenance actions they should take, most of them relatively routine. But the urgency of a fatal accident can trigger a flurry of such notices. (Photo: Dimas Ardian/Bloomberg)

U.S. aviation regulators plan to order airlines to follow Boeing Co.'s advisory on how pilots should handle false readings from a plane sensor that authorities linked to last week's deadly 737 Max jet crash off the coast of Indonesia.

The Boeing bulletin combined with statements by Indonesian investigators suggest that the pilots on the Lion Air 737 Max 8 were battling the plane as its computers commanded a steep dive. The issue is easily solved — Boeing's notice said crews should follow an existing procedure to combat it — but can be difficult to address if pilots become confused.

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