Cracks near the wing strut attachment were found in several Cessna 207s belonging to a single operator, leading the FAA to request information from owners and operators to determine how many aircraft have similar damage. The cracks could cause wing deformation leading to unflattering changes in flight characteristics, and, although unlikely, could cause wing failure in aircraft with extremely advanced cracks, according to the FAA. Cessnas with wing struts produced up to 1986 are potentially affected.
Source: avwebFAA: Possible Structural Issues in Vintage Cessnas