This seems to me to be a "no brainer" thread. If an aircraft displays evidence of a defect, regardless of whether the crew considers it minor or major, it should be written up. It is a clear case of the engineers not being able to rectify a fault about which they have not been informed if no tech log entry is made. Crews are paid to operate aircraft within published parameters and engineers are paid to maintain aircraft which can be so operated. At the end of the day each contribute to a safe and efficient operation, i.e. as a team!
