Yes, that's exactly it. (Although if the plane or the engine is no longer covered by warranty, the cost of fixing an AD generally comes out of the owner's pocket, unlike most recalls of anything else. And unlike, say, a car, it's illegal for Rob to use the plane.)

They are indeed in Pennsylvania; I wouldn't be surprised if they're in Lycoming. Their web site says their plant is in Williamsport. Is that nearby?