Operators of Boeing 787s powered by Rolls-Royce Trent 1000 engines are set to be instructed to conduct engine checks after cabin depressurisation events.
Trent 1000 powerplants have been the subject of extensive inspection regimes owing to intermediate pressure compressor rotor blade cracking issues.
The European Union Aviation Safety Agency has proposed amendments to the check criteria for Package B and Package C engines.
EASA states that a cabin depressurisation incident should serve as a trigger event to conduct inspections of the affected intermediate pressure compressor blades.
Such inspections should take place within five cycles, it adds.
EASA has opened a consultation period for the amendment, and is inviting comments until 23 September.