Several airlines are reportedly conducting precautionary inspections of their Airbus SE (EADSY  ) A350 fleets following an issue identified by Cathay Pacific Airways, Ltd. (CPCAY  ).

The Cathay Pacific airline discovered that 15 of its A350-1000 aircraft required fuel line repairs after an in-flight engine component failure. This problem affected aircraft using Rolls-Royce Trent XWB-97 engines, reported Reuters.

Delta Air Lines (DAL  ), which operates 30 A350-900s, said the airline runs its global operation "with the high standard of care for safety, reliability and care," Reuters noted.

The European Union Aviation Safety Agency (EASA) has issued a directive requiring airlines to perform visual checks and measurements on A350-1000 engines within three to 30 days.

The A350-900 model, which uses a different engine, is not affected by this directive.

Cathay Pacific, which operates 48 A350 jets, has identified 15 aircraft needing engine component replacements, with repairs scheduled to be completed by Saturday.

Japan Airlines Ltd, which has five new A350-1000s, reported no defects after initial inspections but will conduct additional checks based on a Service Bulletin from Rolls-Royce.

Qatar Airways is inspecting its 24 A350-1000s in response to EASA and Rolls-Royce directives, while Etihad Airways, which has five A350-1000s, has found no issues during its inspections so far.

Virgin Atlantic, operating 12 A350-1000s, announced on Friday that it has received an Airworthiness Directive to inspect the XWB engines. The airline is collaborating closely with Airbus and Rolls-Royce on this matter. It anticipates that the inspections will result in "minimal disruptions" to its flight schedule.

British Airways, which operates 18 A350-1000s, has not yet provided a comment on the situation.

Singapore Airlines, which has 63 A350-900 planes, is conducting inspections with no reported flight impacts. Thai Airways, managing 23 A350-900s, said it continuously reviews the situation, per the report.

Airlines are closely monitoring the situation to ensure safety and operational stability.

Price Action: DAL shares are trading lower by 0.36% to $42.02 at last check Friday.