If you own the aeroplane you become responsible for the maintenance of that aeroplane as does an operator. If you are responsible for that maintenance one would imagine you have the duty to carry out daily inspections and sign the maintenance release. If you don't own the aeroplane I would caution against writing anything on any maintenance release that you don't have to, especially defects that may cause the owner/operator to have a financial burden brought to the attention of everybody by you. However remember...an aeroplane won't fly without a signed MR. It's a proven scientific wonder. An aeroplane will crash one second after the MR elapses and a wristwatch is acceptable means of measuring time in service.