What was found
APPROX 30 MIN INTO FLIGHT, AT FL 380, FLT DECK TEMP RAPIDLY INCREASED TEMP TO 27°C IN MANUAL MODE. WITH SELECTOR NEAR 3RD DOT, COLD TEMP AGAIN RAPIDLY RISES.(<P><SPAN>PERFORMED BITE TEST OF TEMP ZONE BOX AND LEFT/RIGHT PACK BOXES. FOUND NOT FAULTS AT THIS TIME. CLEANED TEMP SENSOR IAW AMM 21-61-01. NO FIX. NEEDS MORE T/S.</SPAN></P><P><SPAN>LP 1050501 - M1: REMOVED AND REPLACED L PACK OUT TEMP BULB IAW 21-52-06. PACK TEMPS NORMAL AT THIS TIME. </SPAN></P><P><SPAN><BR DATA-MCE-BOGUS="1" /></SPAN></P>)