Sembra che lo stesso identico problema identificato su centinaia di motori PW1100, sia saltato fuori anche sui CFM Leap:
"The Federal Aviation Administration (FAA) has proposed for Airbus A320neo family aircraft operators, which have opted for certain CFM International LEAP-1A engines, to replace potentially unsafe high-pressure turbine (HPT) rotor interstage seals with serviceable parts. The FAA issued the notice of proposed rulemaking (NPRM) after the engine manufacturer notified the regulator about sub-surface anomalies that developed during the manufacturing process of the HPT’s billets."
"The Federal Aviation Administration (FAA) has proposed for Airbus A320neo family aircraft operators, which have opted for certain CFM International LEAP-1A engines, to replace potentially unsafe high-pressure turbine (HPT) rotor interstage seals with serviceable parts. The FAA issued the notice of proposed rulemaking (NPRM) after the engine manufacturer notified the regulator about sub-surface anomalies that developed during the manufacturing process of the HPT’s billets."
