Boeing Officially Issues Safety Warning for 737 MAX, FAA to Issue Airworthiness Directive

Nov 7, 2018

This post contains references to products from one or more of our advertisers. We may receive compensation when you click on links to those products. Terms apply to the offers listed on this page. For an explanation of our Advertising Policy, visit this page.

Boeing has officially issued a safety message to operators of all 200 of its 737 MAX aircraft in service, advising how to handle the plane in an instance when erroneous data from a key sensor comes about. The statement, which was first reported by Bloomberg from an anonymous source on Tuesday night, comes just more than one week after Lion Air Flight 610, a Boeing 737 MAX aircraft, crashed off the coast of Indonesia, killing all 189 people on board.

As part of Boeing’s statement, which was officially issued late Tuesday, the aircraft manufacturer said that the Indonesian National Transportation Safety Committee “indicated that the aircraft operating Flight 610 experienced erroneous input from one of its AOA (Angle of Attack) sensors.”

The AOA sensors are crucial in helping an aircraft’s system understand whether its nose is too high relative to the angle at which air passes over the wings. In the case of insufficient flow of air over the wings, the aircraft would not be able to generate enough lift to keep flying, resulting in a stall.

Boeing’s statement continued:

“Whenever appropriate, Boeing, as part of its usual processes, issues bulletins or makes recommendations regarding the operation of its aircraft.

On November 6, 2018, Boeing issued and Operations Manual Bulletin (OMB) directing operators to existing flight crew procedures to address circumstances where there is erroneous input from an AOA sensor.”

According to NBC News, the Boeing 737 MAX has three AOA sensors on the fuselage. It’s unclear how much time the crew of Lion Air Flight 610 had to react to the erroneous data from the sensor, as the aircraft was only a few thousand feet in the air.

In a statement, Boeing said that it’s “providing support and technical assistance to the Indonesian National Transportation Safety Committee and other government authorities responsible for the investigation into Lion Air Flight 610.”

On Wednesday, the Federal Aviation Administration said in a statement that it plans to issue an airworthiness directive, saying it “will take further appropriate actions depending on the results of the investigation.”

Norwegian Air, which operates 14 737 MAX 8 aircraft, said that all of its aircraft were functioning normally after receiving the service bulletin from Boeing, according to Reuters.

In the US, several airlines operate Boeing 737 MAX aircraft of different variants. These include American Airlines, Southwest Airlines and United Airlines. Alaska Airlines also has an order for 32 737 MAX 9s, which have yet to be delivered. Worldwide, the MAX — the latest evolution of the workhorse 737, featuring new engines — is in service with many other carriers, after being introduced in 2017.

Chase Sapphire Preferred® Card

WELCOME OFFER: 80,000 Points


CARD HIGHLIGHTS: 3X points on dining and 2x points on travel, points transferrable to over a dozen travel partners

*Bonus value is an estimated value calculated by TPG and not the card issuer. View our latest valuations here.

Apply Now
More Things to Know
  • Earn 80,000 bonus points after you spend $4,000 on purchases in the first 3 months from account opening. That's $1,000 when you redeem through Chase Ultimate Rewards®.
  • Enjoy benefits such as a $50 annual Ultimate Rewards Hotel Credit, 5x on travel purchased through Chase Ultimate Rewards®, 3x on dining and 2x on all other travel purchases, plus more.
  • Get 25% more value when you redeem for airfare, hotels, car rentals and cruises through Chase Ultimate Rewards®. For example, 80,000 points are worth $1,000 toward travel.
  • With Pay Yourself Back℠, your points are worth 25% more during the current offer when you redeem them for statement credits against existing purchases in select, rotating categories
  • Count on Trip Cancellation/Interruption Insurance, Auto Rental Collision Damage Waiver, Lost Luggage Insurance and more.
Regular APR
16.24% - 23.24% Variable
Annual Fee
Balance Transfer Fee
Either $5 or 5% of the amount of each transfer, whichever is greater.
Recommended Credit

Editorial Disclaimer: Opinions expressed here are the author’s alone, not those of any bank, credit card issuer, airlines or hotel chain, and have not been reviewed, approved or otherwise endorsed by any of these entities.

Disclaimer: The responses below are not provided or commissioned by the bank advertiser. Responses have not been reviewed, approved or otherwise endorsed by the bank advertiser. It is not the bank advertiser’s responsibility to ensure all posts and/or questions are answered.