(JAKARTA, Indonesia) — A crucial sensor was replaced on a Lion Air jet the day before it plunged into the Java Sea, and that sensor replacement may have exacerbated other problems with the plane, Indonesian investigators said Wednesday. That sensor, known as the “angle of attack” sensor, keeps track of the angle of the aircraft nose to help prevent the plane from stalling and diving. Earlier this week, Indonesian officials hinted that airspeed indicators played a role in the deadly Oct.