What was found
EVAC ALARM CAME ON ONTAKEOFF. WOULD NOT STOPUNTIL LANDIG PER TSM 23-73-00-810-955-A, REMOVED AND REPLACED CIDS DIRECTORS #1 AND #2 PER AMM 23-73-34. ACCOMPLISHED BITE TEST OF #1AND #2 GOOD. POST FLIGHT REPORT SHOWED CIDS #1 FAULT, BUT REPLACED BOTH CIDS. AFTER REPLACING BOTH CIDS DIRECTORS, EVAC INDICATION CIDS DIRECTORS PER AMM 23-73-00. BOTH CIDS DIRECTORS BITE CHECK TT # 1057587 SN OFF 4514 UNIT, DIRECTOR- OFF 31-2300-9-0002 5561 ON 31-2300-9-0002 4191 UNIT, DIRECTOR- OFF 31-2300-9-0002 4514 ON 31-2300-9-0002 2864 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1057703 SN OFF 5561 NORMAL, NO ALARM.