As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIV, DE- DIVERTED TO ATL DUE TO UNABLE TO MAINTAIN CABIN PRESSURE WITH LT PACK ON MEL. PERFORMED RT PACK BITE AND SINGLE PACK CONFIDENCE CHECK. NO TROUBLE FOUND. RT PACK OPS CHECK GOOD. REPLACED FLOW CONTROL VALVE FOR LT PACK MEL. OPS OF BOTH PACKS NORMAL.