This post has been updated to include an interview with Sikorsky on the effort to diagnose and solve the exhaust gas re-ingestion issue. The Marine Corps and Sikorsky have resolved the engine integration issues that slowed down the CH-53K King Stallion heavy-lift helicopter program, the service announced today. The helicopter’s test program was overhauled in the spring after falling behind due to testing inefficiencies and challenges with the engine, including exhaust gas re-ingestion (EGR). In April, the Marine Corps signed a $1.13-billion contract with Sikorsky for Lots 2 and 3, though the contract was somewhat scaled back compared to previous plans due to … Continue reading Marines, NAVAIR Declare CH-53K Heavy-Lift Helo Engine Problems Resolved