Yes absolutely! But the line should be dictated by common sense, knowledge, and by case-by-case not by time alone!
Let's say you are an airplane mechanic, a 50 year old Cessna 182 comes...no history of maintenance whatsoever, duct tape to hold structural components together, rust all over the engine, oil leaks like it's showering...would you sign it off as airworthy? Same airplane comes, spotless maintenance record, fresh paint, everything checks from the airframe, to engine, to avionics...would you refuse to sign the annual or 100 hours because it's 50 years old?
THINK!!!