What was found
AFTER TAKEOFF- THERE WAS EICAS INDICATION THAT ALL PRESSURIZATION WAS LOST. A/C RETURNED TO FIELD. MAINTENANCE PERFORMED OPERATIONAL CHECK OF PRESSURIZATION CONTROL SYSTEM. RAN GROUND AND TEST FLIGHT, OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER TAKEOFF- THERE WAS EICAS INDICATION THAT ALL PRESSURIZATION WAS LOST. A/C RETURNED TO FIELD. MAINTENANCE PERFORMED OPERATIONAL CHECK OF PRESSURIZATION CONTROL SYSTEM. RAN GROUND AND TEST FLIGHT, OPS CHECK GOOD.