Future vehicle health systems may be based on continuously updated vehicle state matrices derived from networks of multiple sensors. Advanced software models incorporating the functional characteristics of the vehicle may process the sensor network outputs.
- Systems of such complexity that they are unable to yield to software certification techniques that exist today. In some cases it is not the software itself that is the issue it is the failed logic that drives annunciations and/or changes especially following system degradation/failures.
- Sensors continuing to be the lowest reliability components and therefore need to be redundant to obtain the required system safety
- Sensor failures producing single point failure of multiple devices NASA/TM-2009-215764