FAA has issued airworthiness directive 2022-03-16 for certain GEnx-1B and -2Bs, requiring initial and repetitive inspections of the compressor discharge pressure bolted joint and, depending on the findings, a piece part inspection of the stages 6-10 compressor rotor spool, joint seal and high-pressure turbine rotor stage 1 disk, or, as a terminating action, reassembling the joint using a specific torque wrench, effective March 21, 2022.