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.
Active as a journalist since 1987, with a background in newspapers, magazines, and a regional news station, Richard has been covering commercial aviation on a freelance basis since late 2016.
Richard is contributing to AirInsight since December 2018. He also writes for Airliner World, Aviation News, Piloot & Vliegtuig, and Luchtvaartnieuws Magazine. Twitter: @rschuur_aero.
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