What was found
A/C RETURNED TO FIELD. CREW REPORTED A LT PACK HI PRESS EICAS MSG IN-FLIGHT. THE RT PACK WAS PREVIOUSLY DEFERRED. THE A/C FLEW TO PHX. MX REPLACED THE BLEED AIR CHECK VALVE. OP CHECKS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
A/C RETURNED TO FIELD. CREW REPORTED A LT PACK HI PRESS EICAS MSG IN-FLIGHT. THE RT PACK WAS PREVIOUSLY DEFERRED. THE A/C FLEW TO PHX. MX REPLACED THE BLEED AIR CHECK VALVE. OP CHECKS GOOD.