Boeing 737 Max's Autopilot has problem, European aviation regulators find

System on jet was failing to disengage in certain emergencies

Europe’s aviation regulator has outlined five major requirements it wants Boeing Co. to address before it will allow the planemaker’s 737 Max to return to service, according to a person familiar with the matter. One of them, about the jet’s autopilot function, hasn’t surfaced previously as an area of concern.

The European Union Aviation Safety Agency has sent its list to both the U.S. Federal Aviation Administration and Boeing, the person said, asking not to be identified because the details aren’t yet public. The FAA hasn’t publicly discussed details about what changes it’s demanding on the Max, so it’s difficult to