FC-31 domestic designation Feb 22, 2018 21:18:40 GMT -5 Quote Select PostDeselect PostLink to PostBack to Top Post by SSDD on Feb 22, 2018 21:18:40 GMT -5 There has been some rumors that the domestic designation for the carrier-based FC-31 version would be the J-25 while the PLAAF version would be J-21. Is there any truth to this?