Airworthiness Directive · Amendment 39-21107 · Turbine engine inlet section
General Electric Company Turbofan Engines
This AD applies to General Electric Company (GE) CF34-1A, CF34-3A, CF34-3A1, CF34-3A2, CF34-3B, and CF34-3B1 model turbofan engines having a fan blade with a part number listed in Planning Information, paragraph 1.A., of GE Service Bulletin (SB) CF34-AL S/B 72-0314, dated September 27, 2017 or of GE SB CF34-BJ S/B 72-0306, dated September 27, 2017, and with any serial number listed in paragraph 4., Appendix A, of GE SB CF34-AL S/B 72-0314 or of GE SB CF34-BJ S/B 72-0306.
The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) CF34-1A, CF34-3A, CF34-3A1, CF34- 3A2, CF34-3B, and CF34-3B1 model turbofan engines. This AD was prompted by an in-flight failure of a fan blade that led to an in-flight shutdown. This AD requires removal and replacement of the affected fan blades. The FAA is issuing this AD to address the unsafe condition on these products.
Remove the affected fan blades from service within 90 days after the effective date of this AD and replace with a part eligible for installation.
A part that is eligible for installation is any fan blade other than those identified by paragraph (c) of this AD or a fan blade that has been repaired per GE SB CF34-AL S/B 72-0148, Revision 05, dated July 23, 2015; or GE SB CF34-BJ S/B 72-0123, Revision 04, dated October 21, 2015.
