Boeing announced that it had discovered deficiencies in the manufacture of some of its long-range 787 aircraft, known as the Dreamliner.

This comes in the latest setback for the aircraft manufacturer whose 737 MAX is still suspended after two fatal accidents.

Boeing said in a statement on Friday, "Eight aircraft must be examined and repaired before they are allowed to fly, and (Boeing) has contacted the airlines that have excluded these aircraft from service," without specifying the airlines concerned, according to what Anadolu Agency quoted the American Associated Press with. .

It added that it had detected two manufacturing problems in the rear of certain 787s, which means that the aircraft do not meet design standards.

She stated that she had informed the US Federal Aviation Administration of this, and that it was trying to determine the cause of the problem.

The US Federal Aviation Administration said it was aware of the problem and "continues to deal with Boeing," but flight regulators have not said whether they plan to issue a safety notice to operators on the issue, CNN reported.

The problem was first reported by AirCurrent, a magazine concerned with aviation news, which said it was the first known example of a structural problem in the mostly carbon fiber fuselage that caused Boeing to tell airlines to stop the 787.

The 787, which Boeing calls the "Dreamliner", entered service with several airlines in 2011, and became popular with airlines for the longest-distance lines due to size and fuel efficiency, and Boeing has delivered nearly 1,000 of them.

 Suspensions

In 2013, when there were about 50 787s in service, planes around the world were shut down for three months after battery packs overheated in two of them, including a Japan Airlines 787 that was parked at Boston's Logan Airport.

Regulators allowed the 787 to resume flying after Boeing redesigned the housing around the lithium-ion batteries used in auxiliary power systems, including the cockpit electrical system.

And last year, Singapore Airlines grounded two of its 787s, after finding that the propeller blades of some Rolls-Royce engines had deteriorated faster than expected.

Also Friday, Canada confirmed that it will not lift the restrictions imposed on Boeing 737 MAX 8 aircraft until all safety concerns are removed and that they are addressed by Boeing and the US Federal Aviation Administration.

It is reported that the regulators in Canada are the first international regulators to conduct a full test to verify the safety of the aircraft, and they are currently analyzing the results of these tests.

The world's aviation safety authorities decided in March last year to stop operating all Boeing 737 MAX aircraft, following two crashes of this model in Indonesia and Ethiopia within 5 months, which resulted in the deaths of 346 people.