- Rolls-Royce said it would start inspecting Trent 1000 TEN aircraft engines after blade deterioration was identified in a 'small population' of the products.

The company said an accelerated inspection regime had now been agreed with regulatory authorities and would be formally communicated to customers on Wednesday.

An airworthiness directive had also been issued by the European Union Safety Agency, in addition to a Rolls-Royce service bulletin.

'Following sampling of a population of Trent 1000 TEN engines that have experienced a higher frequency of flights at the upper end of their operating range, a small number of these engines have needed to have their high-pressure turbine blades replaced earlier than scheduled,' Rolls-Royce said.

'This new accelerated inspection regime is designed to allow us to confirm the health of the Trent 1000 TEN fleet over the next few months.'

The Trent 1000 TEN engine had been in service since November 2017, and there were currently more than 180 of this type of engine in service.

The company said its engineers had already been developing, and were currently testing, an enhanced version of the engine's blade.

The enhanced blades were expected to start being incorporated into the Trent 1000 TEN fleet in early 2020.

Rolls-Royce said its guidance for in-service cash costs on the Trent 1000 in 2019 and 2020 remained unchanged.

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