@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;

		Aircraft other = (Aircraft) obj;
		if (aircraftRegistration == null) {
			if (other.getRegistration() != null)
				return false;
		} else if (!aircraftRegistration.equals(other.getRegistration()))
			return false;
		return true;
	}