As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - EICAS MLG "LEFT PACK TEMP" CAME ON AFTER ENGINE SHUTDOWN WHILE TOWING IN L PACK INOP LIGHT ILLUMINATED W/APU ON, APU ISOL SW ON AND L & R ISOL SWITCHES ON. DUCT PRESS READS 30 PSI RIGHT & LEFT. BITE CHECK LT PACK CONTROL, RAM INLET ACT FAULT. FOUND CONNECTOR AT ACT LOOSE. RE-SECURED CONNECTOR OPS/BITE CHECK OK. NO FAULTS NOTED.