At Lockheed we used the "No thechnical objection" (NTO) statement for years. However, about 15 years ago the FAA said that they would no longer accept the NTO's, without explanations of what could happen.
On the L-1011 a fairly common problem (happened maybe 10 times in the twenty years I worked in product support) where the mounting structure for the No. 2 spoiler would fail. If it failed at an outstation we would issue a NTO to allow the aircraft to be ferried to a repair facility. But 15 years ago that was no longer acceptable. We still issued the NTO but added things like; all broken parts have to be securred, No. 2 spoilers must be shutoff on the PFCS panel, this ports hydraulic fluid to the retract side of the spoiler actuator and prevents spoiler float in flight, the crew should be advised the use of auto spoilers on landing is permissable, but the nose of the aircarft may pitch up upon spoiler deployent. Therefore, manual spoiler operation is recommended. There were more but I can't remember them all.