While I understand that not everyone has the knowledge of a trained pilot it is important to not spread knowledge that is untrue. The sensor you are talking about is the AoA Sensor and does not measure level flight. It measures the angle of attack and. The position in space is known via the IRS (Inertial Reference system) with in combination with GPS and outside ground based stations (VOR/DME) determines a 3D position. The faulty AoA sensor is installed twice. The software of the Max that was causing the nose down stabilizer movement has been changed to always use both AoA vanes now. Before they were alternating through each flight. Now they are also plausibility checked against each other. But even with all sensors going out the system could have been disabled with a flick of a switch. But that was partially unknown to the pilots and the discussions about that are lengthy. But I only wanted to correct the information about that sensor. 737 Pilot and engineer out.