LONDON -- Airbus was inspecting panels on its bestselling A320 passenger jets after quality control problems surfaced, days after it reported that it was scrambling to fix a separate software problem affecting about 6,000 of the popular planes.

The European planemaker said Monday that it "identified a supplier quality issue affecting a limited number" of metal panels on the single-aisle A320 aircraft.

"The source of the issue has been identified, contained and all newly produced panels conform to all requirements," Airbus said in a brief statement.

The company said it's taking a conservative approach and inspecting all planes that could potentially be affected by the problem, "knowing that only a portion of them will need further action to be taken."

Airbus sources parts and components

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