An airline had to cancel flights for thousands of passengers after it cleaned some planes seat covers with water

• Finnair canceled 40 flights, affecting 5,000 passengers, due to points with the covers on airplane seats.

• The airline suspended operations for eight Airbus A321 jets over fire safety considerations.

• A producer told the airline that it wasn’t verified whether or not it was OK to clean seat covers with water.

Thousands of people had their flights canceled after an airline discovered it might have damaged fire security laws by cleansing airplane seats with water.

Finnair canceled around 40 flights on Monday and Tuesday, affecting some 5,000 passengers, an airline spokesperson said in a assertion to Business Insider.

The Finnish flag service quickly suspended operations for eight of its 15 Airbus A321 jets, they added.

This was because Finnair obtained info from the producer of the planes’ seat covers, saying that it hadn’t been “properly verified” whether or not washing them with water affected fire safety.

“Safety is always our top priority, and we always follow the manufacturers’ maintenance instructions as well as the guidelines and recommendations of the authorities,” the spokesperson said.

On Monday, the eight jets have been flown without passengers to Finnair’s hub in the capital, Helsinki, they added.

“We are investigating options so that we can return the aircraft to service as soon as possible.”

This is not the first time fliers have had their plans disrupted after an airline grew to become conscious of a uncommon issue.

In June, a KLM flight U-turned over the Atlantic Ocean and returned to Amsterdam, after the airline realized the airplane would attain its deadline for upkeep.

“To prevent the license from expiring during the flight, it was decided to return to perform the maintenance in the Netherlands,” a KLM spokesperson beforehand told Business Insider.

Also that month, an American Airlines flight sure for Naples, Italy, modified course to Rome after the airline appeared to ship a airplane that was too big for its meant vacation spot.

The airline used a Boeing 787-9 instead of its standard 787-8 on that route. The latter is about 20 ft longer and, therefore, has different necessities for rescue and firefighting companies.

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