TC reported TIMS showed rear DT having Air-dryer fault . Fault cleared after departed CTH platform. MR pressure normal state. TC reported TIMS showed rear DT ha ving Air-dryer fault . Fault cleared after departed CTH plat ~~~~~ 3516 TC reported TIMS showed having Air-dryer fault. Fault cleared after departed CTH platform. MR pressure normal state.  3516 FC 704 registered - Replaced Air dryer. Tested operation for changeover(120s) - OK. Pneumatic checked - OK. Old: 3513070020 New: 3515280295 Sugu/Anand/Lee PT/Kamar 45188