As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - ONCE BEFORE TAKEOFF AND ONCE AFTER LANDING, (ON GRN ONLY) "L PACK TEMP" ANNUNCIATED ON EICAS. TURN PACK OFF FOR A WHILE THEN REINSTATED PACK. BITE L PACK CONTROL. NO FAULTS NOTED. WORK DONE IAW FIM 21-51-00 FIG 103. OK FOR SVC.