Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain GE CF6-80C2 and CF6-80E1 turbofan engines. This proposed AD would require you to:
Inspect the high pressure compressor rotor (HPCR) stage 11-14 spool shaft for circumferential repair cuts, and
Repair or replace the spool shaft if you find certain circumferential cuts.
This proposed AD results from an updated stress analysis. We are proposing this AD to prevent failure of the HPCR stage 11-14 spool shaft due to low-cycle fatigue that could result in an uncontained engine failure.