FAA has issued airworthiness directive 2021-11-07 for certain GEnx-1B64s, 1B64/P1s, -1B64/P2s, -1B67s, -1B67/P1s, -1B67/P2s, -1B70s, -1B70/75/P1s, - 1B70/75/P2s, -1B70/P1s, -1B70/P2s, -1B70C/P1s, -1B70C/P2s, -1B74/75/P1s, -1B74/75/P2s, -1B76/P2s, -1B76A/P2s, -2B67s, -2B67/Ps and -2B67Bs, requiring inspection of the stages 6-10 compressor rotor spool and, depending on the results of the inspection, replacement, effective July 30, 20