6123 helicopter power plants mechanic

The Marine Corps MOS 6123 is for Helicopter Power Plants Mechanics, T-64. These mechanics inspect, maintain, test, and repair T-64 engines and power plants. They also perform complete repairs on helicopter power plants and systems.

The Marine Corps also has these MOS codes for helicopter maintenance and mechanics: 6114: Helicopter Mechanic A/UH-1 6116: Tiltrotor Mechanic MV-22 6122: Helicopter P/P Mechanic T-58