As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT APPEARED: "LT PACK INOP IN AUTO AND STANDBY", EICAS MSG "R ENG HPSOV" AND "R ENG BLEED LIGHT". FLIGHT RETURNED TO BOGOTA. LT PACK TEMPERATURE CONTROLLER AND HPSOV CONTROLLER WERE REPLACED IN ACCORDING WITH AMM 21-51-14 PAG 401 AND AMM 36-11-08 PAG401 WITH SATISFACTORY RESULTS