If there's a practisng 135 engineering type here, or someone with one handy;
a. When one of the sensors/probes is found faulty and it is cleaned and tested again, and it subsequently works correctly, what is the substance than was removed? Would that be detectable on SPAO's sensors/probes, if it was present?
b. I assume there would be a fuel pressure caption just before flame out?
Nice post SASless
