UPDATE DECEMBER 28 – Operators of the Pratt & Whitney PW1100G-JM will likely be confronted with longer delays from engine inspections. The FAA has issued a notice of proposed rulemaking that requires accelerated inspections and replacements of more parts that have been produced from contaminated powder metal. A final rule of a separate Airworthiness Directive also requires inspections of the CFM LEAP-1B.
As has been reported before, the powder metal issue affects the High-Pressure Turbine (HPT) stage-1 and stage-2 disks as well as the High-Pressure Compressor (HPC) 7th and 8th stage integrally bladed rotor (IBR). An October 2022 AD addressed the HPT disk issues, but after the failure of the blade rotor, this was followed up by another AD in August this year.
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.