As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS LEFT PACK TEMP(<P>PERF FIM 21-51 FT 877, VERIFIED FLOW CONT VALVE OPERATE NORMAL. NO SIGN OF ANY UNUSUAL DEFECTS ON ECS MAINT PAGE. C/W LPACK BITE IAW FIM 21-51 FT 844. FOUND NO PREVIOUS OR CURRENT FAULT PER FIM 21-51 FT 877 SUSPECT TEMP SENSOR 515198 ON ORDER WITH MCC P/N 624014-2. REMOVED AND REPLACED L PACK TEMP SENSOR TS198 IAW AMM 21-51-08. SYSTEM OPERATING NORMAL, NO FAULTS IN VIEW.<BR /></P>)