Helicopter crew chiefs, UH-1; are flight crewmembers that perform duties incident to the maintenance and operation of Marine UH-1 helicopters.

Tiltrotor crew chiefs, MV-22; are flight crewmembers who perform duties incident to the maintenance and operation of Marine MV-22 Tiltrotor Aircraft.

The weapons and tactics crew chief instructors train qualified crew chiefs in the weapons system for operation in a threat environment.

Presidential helicopter crew chiefs are flight crewmembers that perform duties incident to the maintenance and operation of Marine VH- 60N helicopters of the Executive Flight Detachment at HMX-1.

Presidential helicopter crew chiefs are flight crewmembers that perform duties incident to the maintenance and operation of Marine VH-3D helicopters of the Executive Flight Detachment at HMX-1.

VH-71 presidential helicopter crew chiefs are flight crewmembers that perform duties incident to the maintenance and operation of Marine VH-671 helicopters of the Executive Flight Detachment at HMX-1.

Enlisted aircrew/aerial observers/aerial gunners are flight crewmembers that perform duties incident to the operation of Marine helicopters and tiltrotor aircraft.