I prepared a Delta FAIR for a part at Rev C. The base FULL FAIR is at Rev A. There was a NOR (Notice of Rev Change) for Rev B. Then there was a NOR for Rev C. Then they Released a Blue Print at Rev C that incorporated the Rev B and C NOR's. Now I have a Part built to Rev C on my bench. I created a Delta FAIR for Rev C that uses the FULL FAIR at Rev A as Base. The Second Sign off refused to sign do to the fact I don't have a Delta Fair for Rev B. Is this right? I don't know how I could create a Rev B Delta.