Here are the sets which have been scrapped and sets which are still in service as of 3/2/2019.
S43, S47, S51, S66, S74, S75, S91, S98, S101, S102, S106, S114, S124, S127, S141, S142 and S146
Total: 17 sets
S2, S12, S28, S41, S46, S53, S56, S61, S64, S65, S67, S69, S81, S89, S92, S97, S99, S100, S103, S104, S105, S107, S113, S122, S123, S135, S137, S139, S140, S145, S151
Total: 31 Sets
* From what we know these are the sets that are still left but there may have been more sets sent to Chullora without us knowing.