What was found
FWD CAB ZONE TEMP LIGHT ILUMINATES ON RECALL CANCELS WITH PUSH OF MASTER CAUTION. GROUNDED - YES. (RESOLVED ON W/O: 1963714 TASKCARD: N/R-00008 ) FOUND EXTREEMLY DIRTY TEMP SENSORS ON FD & FWD CABIN SENSORS. CLEANED SENSORS & C/W AMM 21-51-10-000-801, OPS CHECK OF LH & RH PACK, OPS NORMAL & TEMPS INDICATE ACCURATE. NO FAULTS ON RECALL DURING TESTS. TEMPS TO FULL HOT & COLD OPERATE NORMAL. THIS CLEARS MEL 21-19G & C/N 05041519. PLACARDS REMOVED. SEAMC SCOTT NOTIFIED.