A proposal is not in force. If adopted, it becomes an AD, usually with changes. Only the Federal Register edition is official.
Summary
We propose to adopt a new airworthiness directive (AD) for all General Electric Company (GE) CF6-80A, -80A1, -80A2, and -80A3 turbofan engines. This proposed AD was prompted by high cycle fatigue (HCF) cracking of the low-pressure turbine (LPT) stage 3 nozzles. This proposed AD would require replacement of the LPT stage 3 nozzles. We are proposing this AD to address the unsafe condition on these products.