Exam Question

Douring morning inspection after an overnight period of UMS operation the following changes were detected:

(i) A sight but perceptible change in engine noise.

(ii) An alteration in engine speed.

(iii) A change in exhaust temperature spread pattern.

(a) Explain, with reasons, the possible causes of such changes. (8)

(b) Indicate how normal operations might be restored. (8)