A survey reveals that Boeing's reputation has suffered due to the fallout from the 737 Max 9 incident.

According to surveys conducted by Morning Consult, Boeing's reputation has suffered a considerable blow this month.

From December 2023 to January 2024, the market research company's report reveals a 12-point decline in net trust among U.S. adults.

The difference between the number of people who say they trust a brand and those who say they don't trust it is known as net trust.

The report, which surveyed nearly 170,000 people, found that net trust among frequent flyers and business travelers decreased, according to Joanna Piacenza, Morning Consult’s head of industry intelligence.

A Boeing 737 Max 9 operated by Alaska Airlines experienced a door plug blow-off on Jan. 5, resulting in a decline in trust.

According to Morning Consult's report, Alaska Airlines and United Airlines are not experiencing the same negative impact as other airlines, as their crew found loose bolts on their own 737 Max 9s during inspections.

Boeing has not yet replied to CNBC’s request for comment.

On Jan. 23, Stanley Deal, CEO of the company's Commercial Airplanes division, apologized for the disruption caused to airline customers and their passengers due to the significant problems with the airplanes. He stated that the company is taking immediate action to bring the planes back to service safely and to enhance the quality and delivery of their services.

Weathering tough times

The net trust among U.S. adults in Boeing fell below 6% after two Max 8s crashed within five months, specifically Lion Air Flight 610 in October 2018 and Ethiopian Airlines Flight 302 in March 2019.

High-dollar investors have been the driving force behind the steady increase in net trust in Boeing since 2020, according to Morning Consult.

Boeing is more trusted by Americans than Airbus, which is based in Europe and competes with it.

For the second time in five years, Airbus received more confidence from U.S. respondents this month, as per the report.

Fallout not over

The fallout likely isn’t over yet, said Piacenza.

Boeing's net trust metrics are expected to decrease slightly, but not as significantly as in March 2019, due to the brand's name remaining in the news. The big trust drop in March 2019 was caused by two deadly crashes, while the Alaska Airlines 1282 incident was horrifying but did not result in any casualties.

The Federal Aviation Administration announced on Wednesday that planes that pass inspections can resume flying after being grounded for approximately 170 Max 9s. As a result, Alaska Airlines, United Airlines, and Copa Airlines have resumed flying the aircraft.

The website Simple Flying reports that 11 airlines currently operate Boeing 737 Max 9s, including Aeromexico, Air Tanzania, Alaska Airlines, Copa Airlines, Corendon Dutch Airlines, Flydubai, Icelandair, Lion Air, SCAT Airlines, Turkish Airlines, and United Airlines.