What was found
ON CLIMB OUT EICAS R PACK TEMP EXTINGUISHED WITH STANDBY ( PACK TEMPERATURE CONTROL SYSTEMS, (-200/-300) (MAY BE INOPERATIVE OFF) )(<P>DEFERED IAW MEL 21-51-03 MDDR 146045 CAT C 8MAY21 PLACARD INSTALL</P><P>30APR2021 - 1276082 ITEM #10 - REMOVED AND REPLACED R/H PACK TEMP CONTROLLER IAW AMM 21-51-14. OPS CHECK GOOD. THIS CLEARS DMI 146045 PLACARDS REMOVED.</P><P>1MAY2021 - 1476083 ITEM #13 - REMOVED AND REPLACED RH PRIMARY HEAT EXCHANGER TEMPERATURE BULB IAW AMM 21-52-08. OPERATIONAL CHECK GOOD INDICATION NORMAL. P/N 28034-1, NSN</P><P><BR /></P>)