Boeing left airlines, FAA in dark on alert linked to 737 crashes

Berkshire Hathaway chairman Warren Buffett walks through the exhibit hall as shareholders gather to hear from the billionaire investor at Berkshire Hathaway Inc's annual shareholder meeting in Omaha

Neither the FAA or Boeing interfered with the fleet's operations until the Ethiopian Airlines crash.

Boeing's statement that it had failed to raise an alert to the inoperative circuit further eroded trust in the manufacturer after the crashes of 737 Max airliners in Indonesia in October and Ethiopia last month that killed 346 people.

The safety alert, called an "angle of attack" (AOA) indicator, tells pilots if a sensor is transmitting bad data. But it did not disclose the issue to airlines or safety regulators until after the Lion Air plane crashed off the Indonesian coast, killing all 189 aboard.

In 2017, Boeing discovered an error with the angle of attack (AOA) Disagree alert, which notifies pilots of discrepancies with the sensors that track the lift of a plane's nose.

Boeing said it is issuing a display system software update "to implement the AOA Disagree alert as a standard, standalone feature before the MAX returns to service".

"Neither the (optional) angle of attack indicator nor the AOA Disagree alert are necessary for the safe operation of the airplane", Boeing said in the statement.

The FAA, in a separate statement Sunday, said that following the disclosure by Boeing in November, its Corrective Action Review Board "determined the issue to be "low risk" and decided it could be dealt with as part of Boeing's software update announced after the Lion Air crash and still in the works.

All Boeing 737 Maxes have now been grounded. They criticized Boeing's original software design that made a decision to rely on data from a single AOA sensor, noting that a scenario in which a breakdown of the single sensor due to defects was not considered.

Boeing said it also told the FAA that company engineers had identified the issue in 2017, along with the findings from their internal review process.

Trump attacks Democrats for wanting Mueller to testify
Democrats are seeking more information about Mueller's report on his Russian Federation investigation. That's the date the Committee has proposed, and we hope the Special Counsel will agree to it.

"However, Boeing's timely or earlier communication with the operators would have helped to reduce or eliminate possible confusion", he added.

Boeing did not inform the airlines, the pilots and the public until April 29, six weeks after the second crash.

Even if they had been concerned with safety, many of them may not have known the right questions to ask since most lack experience in aerospace and defense, which MacMillan said is a problem, not only for Boeing, but for many corporate boards.

Accident investigators on the two plane crashes have linked erroneous data from the AOA system to the deadly incidents.

Although the angle itself is fundamental to flight, the industry has debated for years whether the information should be included in crowded cockpit displays because it is directly related to airspeed, which pilots already watch closely.

"That's negligence from Boeing in regards the AOA system", said Evi Samsul Komar, whose son and nephew were on the fatal flight.

The safety feature that displayed the readings from the two sensors was available for a fee.

Rockwell Collins, which was acquired previous year by United Technologies, provides the cockpit displays and flight-control computers for the 737 Max. "All customers with previously delivered MAX airplanes will have the ability to activate the AOA Disagree alert".

Related:

Comments

Latest news

Deals you can score during National Nurses Week
When nurses finish their basic educational programs, they must pass a comprehensive test, the NCLEX, which is a national test. Friganović also writes about violence to which nurses are being exposed in healthcare institutions.

Pep Guardiola wowed by Man City performance
They've had to wait all weekend long to get their shot, and you could argue that's going to increase their nerves. I didn't expect to maintain the level.

Salah a doubt, Firminho out for Liverpool in Champions League
The result confirmed Cardiff's relegation after one season for the second time in five years. Son Heung-min and Juan Foyth were sent-off either side of half-time.

How to Watch Google I/O 2019 Livestream - Full Schedules and Start Times
Google is scheduled to officially unveil the Pixel 3a and Pixel 3a XL on May 7 at its 2019 I/O developer conference . Here we can get details of Android Q, Pixel smartphones, Google Assistant , Stadia , etc.

Met Gala 2019 Time & What Channel the Red Carpet Is On Tonight
It is rumored that regulars Beyonce, Rihanna and Blake Lively might also be AWOL which would be astounding-to say the least. But she promised to pull out all the stops for 2019's " Camp: Notes on Fashion " theme, and she delivered.

Passenger plane with fire on board lands at Moscow airport
Kristian Kostov, a former Bulgarian Eurovision contestant, has posted on social media about witnessing the incident. The plane apparently did not have time to jettison fuel before the emergency landing, news reports said.

Trump Asks Congress for $4.5 Billion in Emergency Border Funds
And the final $178 million would be used for mission support, including technology upgrades. This number represents about 1% of families that crossed the border in that time period.

President Trump: China Tariffs Will Jump to 25% This Week
Trump, however, warned that although talks were continuing, they were progressing too slowly as Beijing tries to renegotiate. The Trump administration has met with Chinese officials over the last few months in hopes of striking a new trade deal.

Senate Judiciary Democrats Grilled AG Barr For "Political Points"
Meanwhile, the Department of Justice has continued its own probes into elements of the Russia-collusion investigation. Trump told reporters in the Oval Office last week that testimony from Mueller was "up to our attorney general ".

Alexis Sanchez Starts - Manchester United Team vs Huddersfield Confirmed
You watch them, they haven't got the quality, but I like watching them a lot more than the ones in the red shirts, to be honest. Another David de Gea blunder gave Chelsea a share of the spoils after Juan Mata had fired United into a 1-0 lead.

Divided over impeachment, Democrats find unity in targeting Attorney-General Barr
Pramila Jayapal, D-Wash., who sits on Judiciary panel, say they're not interested in hearing from Barr anymore. During a brief Oval Office session with reporters Friday, Trump deferred to Barr, saying, "I don't know".

Trump asks why ‘radical left wing media’ are allowed on Twitter, Facebook
The company believes that in this case, it believes that the best option is to remove these people from its platform. Then he suggested he likes the idea of some social media bans - if they affected the sources he can't stand.

Tiger Woods to receive Presidential Medal of Freedom
This has meant so much to me and my family, this tournament, and to have everyone here, it's something I'll never, ever forget". When Quail Hollow hosted the 2017 PGA Championship, the Wells Fargo Championship moved to Eagle Point in Wilmington that year.

Valencia condemns Nazi, monkey gestures by fans at Arsenal
The chances continued to come for Arsenal's front two as Aubameyang volleyed into the ground and over just before the break. Arsenal had conceded nine goals in their last three Premier League games and it was easy to see why in a terrible opening.

Senior Hamas official heads to Egypt for talks on Israel
The military accused the Islamic Jihad of trying to destabilise the area, and attacked Hamas for failing to prevent the bombings. The army said Saturday that sirens warning of incoming projectiles sounded several times in southern Israel .

Other news