As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY, UNABLE TO MAINTAIN CABIN PRESS AT FL 320. CABIN ALT WAS 10,150 & CLIMBING. FOUND NR 1 PACK FUSELAGE CHECK VLV MISSING & ABOUT 3 SQUARE INCHES OF ITS FLAPPER & BELLOWS BLOWN OUT. REPLACED BELLOWS & FUSELAGE CHECK VLV. PRESSURIZED ACFT WITH NO FAULTS FOUND. SEE NR 112107 & LP 900227.