Lion Air plane crashes into lamp pole on Indonesian airport runway

Lion Air plane crashes into lamp pole on Indonesian airport runway

The Lion Air 737 Max 8 jetliner plummeted towards the Java Sea minutes after takeoff from Jakarta airport in Indonesia on October 29.

Boeing, which manufactured the Lion Air plane, issues safety-related bulletins, and had previously circulated instructions about what flight crews should do if sensors fail.

Under some circumstances, a 737 MAX jet could automatically push down its nose if it detects that a stall is possible, based on the angle of attack.

Indonesian accident investigators said on Monday that an airspeed indicator on the crashed jet was damaged for its last four flights, but US authorities responded cautiously to suggestions of fleet-wide checks.

Indonesian crash investigators have confirmed the 737 in the crash had technical faults on four flights previous to the one in which it plummeted into the sea shortly after take-off from Jakarta.

This issue is said to arise only during manual flight. The information can be critical in preventing the plane from stalling.

A preliminary report on the cause of the accident is expected at the end of the month.

The agency said it would probe what caused the indicator problem and whether proper repairs were done - including replacing the faulty component, he added.

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Boeing will caution its customers of "erroneous readings" from a flight-monitoring system can cause the planes to abruptly dive, Bloomberg quoted an anonymous source as saying.

An angle of attack sensor had been changed by mechanics on the ground in Bali the day before the crash, Indonesia's National Transportation Safety Committee (KNKT) has said.

Lion Air JT610 plunged into the Java Sea less than half an hour after taking off from Jakarta on a flight to Pangkal Pinang city.

On the fatal flight, the plane hit the water at very high speed after the flight crew had been cleared to return to the airport several minutes after takeoff.

The new information about Lion Air Flight 610 raises multiple questions investigators will want to examine on the pilots' actions, how flight crews were trained and whether the maintenance performed on the system was adequate, said Roger Cox, a former NTSB investigator. Indonesian officials say that all 11 such aircraft have been tested and declared safe to fly.

The FAA has warned pilots of this happening and said it would "take further appropriate actions depending on the results of the investigation".

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 Boeing bulletin only reminds operators of the plane to follow the procedure and doesn't require any physical fixes that could take the aircraft out of service. "What will have to be found is, is Boeing pushing itself too hard?" All 62 people on board died.

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