3522 TC REPORTED AIR DISCHARGE DURING 12 ~~~~~ 3522 TC REPORTED AIR DISCHARGE DURING 12 CAR UNCOUPLING PROCESS.  3522 found air discharged & EMV having heavy air leak. Replaced with available spare. Security/Function check - OK.  Kana 44472 #3522 EMV S/N :    OLD : not available NEW : 3518100555