
Lion Air pilots struggled to control plane that crashed in Indonesia
Lion Air pilots struggled to maintain control of a Boeing jet as its automatic safety system repeatedly pushed the plane’s nose down, according to a draft of a preliminary report by Indonesian authorities investigating last month’s deadly crash.
The investigators are focusing on whether faulty information from sensors led the plane’s system to force the nose down. The new Boeing 737 MAX 8 plunged into the Java Sea on October 29, killing all 189 people on board.
The New York Times reported that information from the Lion Air jet’s flight data recorder was included in a briefing for the Indonesian Parliament and reported by Indonesian media. Peter Lemme, an expert in aviation and satellite communications and a former Boeing engineer, wrote an analysis of the data on his blog. The AP was unable to independently verify the authenticity of the report posted online.
Indonesian authorities are expected to issue the report Wednesday, although it is unclear whether they will offer a probable cause for the crash.
The MAX aircraft, the latest version of Boeing’s popular 737 jetliner, includes an automated system that pushes the nose down if a sensor detects that the nose is pointed so high that the plane could go into an aerodynamic stall.
Lemme described “a deadly game of tag” in which the plane pointed down, the pilots countered by manually aiming the nose higher, only for the sequence to repeat about five seconds later. That happened 26 times, but pilots failed to recognize what was happening and follow the known procedure for countering incorrect activation of the automated safety system, Lemme told The Associated Press.
Lemme said he was also troubled that there weren’t easy checks to see if sensor information was correct, that the crew of the fatal flight apparently wasn’t warned that similar problems had occurred on previous flights, and that the Lion Air jet wasn’t fixed after those flights.
“Had they fixed the airplane, we would not have had the accident,” he said. “Every accident is a combination of events, so there is disappointment all around here,” he said.
Boeing did not immediately respond to two emails and a phone call requesting comment. The company said last week that it remains confident in the safety of the 737 MAX and had given airlines around the world two updates to “re-emphasize existing procedures for these situations.”
Pilots at American Airlines and Southwest Airlines complained this month that they had not been given all information about the new system on the MAX. More than 200 MAX jets have been delivered to airlines around the world.
The Indonesian investigation is continuing with help from U.S. regulators and Boeing. Searchers have not found the plane’s cockpit voice recorder, which would provide more information about the pilots’ actions

South Korea's Moon urges Biden admin to follow up on Kim, Trump summit

Indonesia quake death toll at 81 as country battles series of disasters

China's economy picks up speed in Q4, ends 2020 in solid shape after Covid shock

Many Australians urge PM Morrison to rebuke MP for Covid disinformation

Donald Trump, so far, not planning to pardon himself: Reports

Biden expected to pick FTC member Chopra to head consumer financial regulator

FBI vetting Guard troops in DC amid fears of insider attack

Biden swearing-in: Heavily fortified statehouses around US see small protests

Small numbers of protesters gather at fortified US statehouses

WHO team probes Covid-19 origin; says 'world may never find patient zero'

In last blow to China, Trump admin halts Huawei suppliers

Bird flu outbreak: Japan culled record 5.8 million chickens since Nov 2020

Guatemalan forces clash with migrant caravan, Biden team seeks to halt exodus

Fragile Italian government faces do-or-die votes in parliament
