June 14 (Reuters) - The U.S. Federal Aviation

Administration is investigating falsified documents that were

used to verify the authenticity of titanium used in some

recently manufactured Boeing ( BA ) and Airbus jets,

the New York Times reported on Friday.

The documents are also being investigated by Spirit

AeroSystems ( SPR ), which supplies fuselages for Boeing ( BA ) and

wings for Airbus, according to the report.

Titanium, an important component in the aerospace supply

chain, is used to make landing gears, blades and turbine discs

for aircraft.

The FAA is investigating the scope of the problem and

trying to determine the short-and long-term safety implications

to planes that were equipped with those parts, NYT reported,

citing a statement from the regulator.

The investigation comes after a parts supplier found small

holes in the material - used in manufacturing of jets - from

corrosion, the report added.

Aircraft manufacturers are facing strong demand for new

planes due to a surge in post-pandemic travel. However, supply

chain issues and component shortages are limiting their ability

to meet this demand.

Last year, jet engine manufacturer CFM International

disclosed that thousands of its engine components might have

been sold with falsified documentation by a British distributor.

The discovery had prompted airlines to change parts on a

handful of planes.

The FAA, Boeing ( BA ), Airbus and Spirit did not immediately

respond to Reuters requests for comments.

Boeing ( BA ) and Spirit shares were down about 1% each in

premarket trading.