code: def arducopter_arm(self):
          '''arm motors (arducopter only)'''
          if self.mavlink10():
              self.mav.command_long_send(
                  self.target_system,  # target_system
                  self.target_component,
                  mavlink.MAV_CMD_COMPONENT_ARM_DISARM, # command
                  0, # confirmation
                  1, # param1 (1 to indicate arm)
                  0, # param2 (all other params meaningless)
                  0, # param3
                  0, # param4
                  0, # param5
                  0, # param6
                  0f arducopter_arm(self):
          '''arm motors (arducopter only)'''
          if self.mavlink10():
              self.mav.command_long_send(
                  self.target_system,  # target_system
                  self.target_component,
                  mavlink.MAV_CMD_COMPONENT_ARM_DISARM, # command
                  0, # confirmation
                  1, # param1 (1 to indicate arm)
                  0, # param2 (all other params meaningless)
                  0, # param3
                  0, # param4
                  0, # param5
                  0, # param6
                  0)
docs: arm motors (arducopter only)