FAA has issued airworthiness directive 2020-20-13 for certain GE CF6-80As, CF6-80A1s, CF6-80A2s, CF6-80A3s, CF6-80C2A1s, CF6-80C2A2s, CF6-80C2A3s, CF6-80C2A5s, CF6-80C2A5Fs, CF6-80C2A8s, CF6-80C2B1s, CF6-80C2B1Fs, CF6-80C2B2s, CF6-80C2B2Fs, CF6-80C2B4s, CF6-80C2B4Fs, CF6-80C2B5Fs, CF6-80C2B6s, CF6-80C2B6Fs, CF6-80C2B6FAs, CF6-80C2B7Fs, CF6-80C2D1Fs, CF6-80C2L1Fs and CF6-80C2K1Fs, requiring ultrasonic inspection of high-pressure turbine stage 1 and stage 2 disks, effective Nov. 12, 2020.