Summary
We propose to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) GEnx-1B64, -1B64/P1, -1B64/P2, - 1B67, -1B67/P1, -1B67/P2, -1B70, -1B70/P1, -1B70/P2, -1B70/75/P1, - 1B70/75/P2, -1B70C/P1, -1B70C/P2, -1B74/75/P1, -1B74/75/P2, -1B76A/P2 turbofan engines. This proposed AD was prompted by a fracture of the fuel manifold which led to an in-flight shutdown of the engine. This proposed AD would require replacement of the outer left side signal fuel manifold with a part eligible for installation. We are proposing this AD to correct the unsafe condition on these products.