What was found
DURING HEAVY MAINTENANCE: LH OVERWING "SLIDE ARMED" LIGHT INOP; REF TO ASCENT WO FL2164 NR 20036, PERFORMED T/S PROCEDURE EPSU 17WL TO COMMUNICATE WITH THE CIDS PER A321 TSM TASK 33-73-00810-900-A AND RESET DEU-B PER A321 AMM 23-73-00-740-005-B, PERFORMED OPS PER 52-73-00-710-002-A, OPS CHECK GOOD.