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The Federal Aviation Administration certified General Electric's CF6-80C2 engine for the C-5 Reliability Enhancement and Re-Engining Program in September. The certification follows eight months of ground testing on the engine to validate the integration with the aircraft systems and the new FADEC III control system. The first engine was then delivered to Lockheed Martin in Marietta, Georgia, for installation. The RERP propulsion system includes the CF6-80C2 engine (to be designated F103-GE-100), thrust reverser, and nacelle. The CF6-80C2 turbofan has accumulated more than 100 million flight-hours logged on ten different commercial applications.