@type t() :: %APM.Message.ControlSystemState{
  airspeed: Float32,
  pitch_rate: Float32,
  pos_variance: [Float32],
  q: [Float32],
  roll_rate: Float32,
  time_usec: MAVLink.Types.uint64_t(),
  vel_variance: [Float32],
  x_acc: Float32,
  x_pos: Float32,
  x_vel: Float32,
  y_acc: Float32,
  y_pos: Float32,
  y_vel: Float32,
  yaw_rate: Float32,
  z_acc: Float32,
  z_pos: Float32,
  z_vel: Float32
}