Crab, agree, but I have no idea what the inspection criteria would be re the 139 tail boom, however whatever they may have been they did not detect a severity that required replacement it seems. As you know impact damage on these structures has to be severe to cause visible deformation of the structure, it is more lightly that any visible indications were chipping of the external paint surface. Possibly the use of an Ultra Sonic detection system called FLAUS that has I understand shown success in detecting hidden de-bonding and internal voids may have help, I don’t know if this technology is in use or approved for use.