Sometimes it will correct itself in flight. It may just reset itself. Diagnosing a problem quickly means that the bomber can be turned around in less time and with fewer man-hours. One of the more challenging aspects of maintaining the B-2 is its composite materials. Unique methods have been developed to patch damage.
Areas are specially prepared to accept a patch.
Materials must be cured for certain periods of time at extremely high temperatures while hundreds of pounds of suction are applied to remove air bubbles that would ruin a patch. Sometimes maintainers are thankful for little advances. For example, the B-2 has antilock brakes. Sensors detect when a brake is about to lock and automatically release pressure, which shifts the burden to other tires. This keeps tires from skidding and wearing out at a fast clip.