Rolls-Royce has been ordered to change 30 of its Trent1000 engines (not pictured) on Boeing 787s because of fears that they could suffer a power surge and shut down mid-flight.
The European Union Aviation Safety Agency issued a directive on Friday for engines to be “de-paired” on 787s where both turbines have a high number of operating hours.
This accounts for around 4% of the total fleet of 787 engines and five operators have been impacted so far, according to reports.
Rolls-Royce has had to solve a number of issues with its Trent 1000 engines over the last four years.
Nick Cunningham, an analyst at Agency Partners in London, told Bloomberg: “The Trent 1000 program has been like whack-a-mole for Rolls-Royce.
“They address one problem and another one crops up. The latest AD from EASA suggests that the risks for the Trent 1000 are more on the downside than on the upside. They may have to provision for higher costs when they report earnings.”