Boeing to issue safety warning to pilots for 737 Max jets

An Indonesian rescue team lift a pair tires from the ill-fated Lion Air flight JT 610 off Karawang in the Java Se

That included three flights that landed safely, as well as the deadly crash on October 29, when flight JT610 crashed minutes after takeoff from Jakarta, Indonesia, with 189 people on board.

This isn't to say that the Lion Air crew was necessarily in the latter group-despite safety problems in the past with this airline, this specific crew may have absolutely been first-rate aviators, yet still suffered the same fate-but the fact is that we're in an era of increasing automation in aviation that's still 100 percent overseen by human pilots. Under some circumstances, such as when pilots are manually flying, the Max jets will automatically try to push down the nose if they detect that an aerodynamic stall is possible, the person said.

Indonesia's National Transportation Safety Committee said it had agreed with Boeing on procedures that the airplane manufacturer should distribute globally on how flight crews can deal with "angle of attack" sensor problems.

Boeing has issued a warning to airlines using the company's 737 MAX that some models may issue "erroneous data" to pilots that could cause the plane to nosedive.

At the same time it will alert the pilot about the minimum speed to warn that the plane may be near staling - this causes the pilot's control column to shake as a warning - but will be contradicted by the speed indicators on the flight deck.

WestJet also has 9 of the 737 MAX jets in its fleet, but the airline did not immediately respond to a query about the Boeing bulletin from CBC News.

The 787 Max 8 is the second Boeing aircraft to experience serious technical problems soon after its introduction, leading some analysts to question whether Boeing may have overlooked quality concerns as it strives to meet rising global demand.

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It was not immediately clear whether the reported problem stemmed from a mechanical or maintenance issue, nor whether USA authorities would order any checks.

After an engine on a Southwest Airlines plane fractured earlier this year over Pennsylvania, killing a passenger, CFM International Inc. issued multiple bulletins to operators of its CFM56-7B power plants.

"The pilots had a battle on their hands for a few minutes", she said.

Transport safety committee chairman Soerjanto Tjahjono said airspeed indicator malfunctions on the jet's last four flights, which were revealed by an analysis of the flight data recorder, were intertwined with the sensor issue.

Experts have been puzzled about what could have caused the jet to go down in clear skies, unlike other major airplane disasters in which weather or older jets were major factors.

"If you were driving down the interstate and the speedometer failed, would you expect to crash the vehicle?" said John Cox, a former airline pilot and now a safety consultant. Body parts are still being recovered and searchers continue to hunt for the cockpit voice recorder. The device was replaced in Bali after pilots reported a problem with airspeed reading, the Indonesian transportation safety regulator said Wednesday.

Indonesia's National Search and Rescue Agency, Basarnas, said that it had extended the search operations by three days until Wednesday. The aircraft's erratic behaviour during its final flight, and reports of an issue during a previous journey, had already prompted speculation that this could have been an issue.

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