Indonesia extends search for victims of Lion Air crash

  • Indonesia extends search for victims of Lion Air crash

Indonesia extends search for victims of Lion Air crash

Boeing said its bulletin underscored "existing flight crew procedures" created to address circumstances where the information coming into the cockpit from the sensors was wrong.

Boeing issued a special bulletin yesterday addressing a sensor problem flagged by Indonesian safety officials investigating the crash of a Lion Air 737 that killed 189 people last week.

Boeing's newly issued bulletin focuses on the 737 MAX's angle-of-attack sensors, or AOA sensors, which are supposed to provide data about the angle at which wind is passing over the airplane's wings.

If this happens (un-commanded nose-down stabilizer trim) pilots can respond by pushing a switch on their control column (yoke), however, 737's computers will resume trying to dive as soon as the switch is released the new Boeing bulletin said.

"The draft of what will be conveyed by Boeing this morning has been presented to us", air accident investigator Nurcahyo Utomo said.

Boeing says that the 737 MAX is the fastest-selling airplane in the company's history, with over 4,700 orders to date.

Boeing Co. said on Wednesday it had issued a safety bulletin reminding pilots how to handle erroneous data from a key sensor in the wake of last week's crash in Indonesia.

KNKT said that there was a problem with the sensor on the last flight taken by the doomed plane, from the island of Bali to Jakarta, even though one sensor had been replaced in Bali.

A source said on condition of anonymity that the Boeing bulletin related only to the 737 MAX, of which there are just over 200 in service.

737 MAX passenger plane slammed into the sea on October 29, only minutes after takeoff from Jakarta en route to Bangka island near Sumatra.

Boeing issued a statement on an update to the 737 MAX flight manual on Tuesday, Nov. 6, a day after investigators discovered JT610's faulty airspeed indicator. If the problem isn't fixed, it can cause planes to simply fall out of the sky.

The plane is the latest generation of Boeing's workhorse narrowbody aircraft, with more than 200 delivered since it entered service past year and a total of 4,700 orders placed by airlines around the world.

Flight JT610 sped up as it suddenly lost altitude and then vanished from radar 12 minutes after take-off, with witnesses saying the single-aisle jet plunged into the water.

"There were four flights in all that suffered a problem with the airspeed indicator", NTSC head Soerjanto Tjahjono told reporters. Pilots flying with an AOA sensor generating erroneous inputs to the system can experience the inability to engage the aircraft's autopilot system, among other problems.

The Lion Air crash involved a brand new Boeing Max 8 jet, which was cleared to fly despite days of inaccurate speed readings. The pilot on the crashed Lion Air flight had asked shortly after takeoff to return to the airport in Jakarta but lost contact with air traffic controllers afterward.

Authorities were still searching for the cockpit voice recorder, the second so-called "black box".