What was found
(CAN) A/C RETURNED TO GATE DUE LT PACK TEMP EICAS MESSAGE AND LT PACK INOP LIGHT ON. LT ACM REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) A/C RETURNED TO GATE DUE LT PACK TEMP EICAS MESSAGE AND LT PACK INOP LIGHT ON. LT ACM REPLACED.