As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2883, BOS-JFK. CABIN ALT HIGH WARNING ; AS PER TSI MDDR 442083 PERFORMED GVI OF PACK LOAD IAW AMM 21-51-05 NO DELYES NOTED PRESSURE SWITCH OPS CHK OK PERFORMED CABIN PERSSURAZATION CHK IAW AMM 36-00-00-860-802 OPS CHK OK A/C OK FOR SVC