As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"CABIN DOOR SEAL" EICAS MESSAGE FOLLOWED BY HIGH PITCH SQUEAL AND RUSHING AIR PRESSURE. FLAG OF +- 500 FPM. REMOVED CTR AND LT BLEED AIR CHECK VALVES DUE TO LEAKS. INSTALLED NEW CHECK VALVES IAW M/M CH 36-15-00. OPS CHECKED AND LEAK CHECKED GOOD.