Honeywell is expanding its Phoenix manufacturing operations to include engines that the Navy may use to train pilots. The company will begin manufacturing F124 jet engines at its Phoenix Engines campus if the plane it powers is chosen for a Navy training program. The project requires expensive specialized facilities in Phoenix and San Tan. Honeywell plans to begin producing the engines next year and aims to produce up to 500 over 13 years. The F124-powered Beechcraft M-346N aircraft is one of four planes under consideration for the Navy's Undergraduate Jet Training System. The Navy is seeking replacements for its T-45 training jets with a combination of aircraft and simulators.