Boeing's Chinese Plant to Deliver First 737 Max

Boeing's Chinese Plant to Deliver First 737 Max

Boeing's Chinese Plant to Deliver First 737 Max

Boeing has issued a warning to airlines using its 737 MAX planes after a sensor failure was identified as a potential cause of the crash of a passenger flight near Indonesia.

But a Boeing statement said a safety bulletin, sent to airlines on Tuesday, directs flight crews to existing guidelines on how they should respond to erroneous "angle of attack" data.

The US Federal Aviation Administration has issued an emergency directive, warning of problems in the latest Boeing 737 MAX aircraft that could lead to pilots losing control of the planes.

The left wing of the Lion Air Boeing 737-900 plane collided with the metal post as the aircraft was heading to the runway at the Fatmawati airport in Bengkulu, Indonesia.

The AD followed Boeing's issuing of an operations manual bulletin (OMB), asking 737 MAX operators to remind pilots of how to handle "erroneous" information from the aircraft's angle of attack sensors.

An Air Canada Boeing 737 MAX 8 (C-FSJH) single-aisle narrow-body jet airliner airborne on short final approach for landing at Vancouver International Airport, Richmond, B.C. on Wednesday, August 29, 2018.

The pilots union at Southwest Airlines Co., the biggest customer of the 737 Max, hasn't received any reports from its members of problems with faulty sensor readings, said Jon Weaks, president of the Southwest Airlines Pilots Association.

The issue only occurs when a plane's autopilot is switched off, Boeing said. In short they have to accommodate everyone from the best trained pilots in the world to the worst.

Indonesia authorities extended on Wednesday a search for victims of a plane crash last week, when all 189 on board a Lion Air flight were killed, and for the aircraft's second black box, the cockpit voice recorder.

But the preliminary result of the investigation will only be known at the end of November.

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.

Lion Air JT610 plunged into the Java Sea less than half an hour after taking off from Jakarta on a routine flight to Pangkal Pinang city. "Is this fatal? NTSC (National Transportation Safety Committee) wants to explore this", he said.

The airline said at the time that it had 61 "firm orders" for the planes.

According to the company, one of the key sensors on the plane malfunctioned, causing the plane to crash.

These included erroneous speed and altitude data that prompted a flight operated the day before the crash to go into a dive that frightened passengers and a made them sick.

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