Airworthiness Directive · Amendment 39-18212 · General Electric Company Turbofan Engines
General Electric Company Turbofan Engines
Superseded. A later AD replaced this one: AD 2017-09-06. Comply with the one in force.
This AD applies to all General Electric Company (GE) GEnx-1B model turbofan engines with full authority digital engine control (FADEC) software version B175 or earlier, installed, and GEnx-2B model turbofan engines with FADEC software version C065 or earlier, installed.
We are adopting a new airworthiness directive (AD) for all General Electric Company (GE) GEnx turbofan engine models. This AD was prompted by reports of GEnx-1B and GEnx-2B engines experiencing power loss in ice crystal icing (ICI) conditions. This AD precludes the use of full authority digital engine control (FADEC) software, version B175 or earlier, in GEnx-1B engines, and the use of FADEC software, version C065 or earlier, in GEnx-2B engines. We are issuing this AD to prevent engine failure, loss of thrust control, and damage to the airplane.
(1) Thirty days after the effective date of this AD, do not operate any GE GEnx-1B engine with FADEC software version B175 or earlier, installed in the electronic engine control (EEC).
(2) Thirty days after the effective date of this AD, do not operate any GE GEnx-2B engine with FADEC software version C065 or earlier, installed in the EEC.
