As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE: N/A ATB EMERGENCY DECLARED. LANDING UNEVENTFUL. CLIMBING OUT AT 11000 CABIN ALTITUDE HORN, LIGHT AND EICAS MESSAGE THEN CABIN ALTITUDE AUTO AND FINALLY MAIN CARGO DOOR LIGHT AND EICAS MESSAGE. FOUND MAIN DECK CARGO COMPT SAFELY NET NOT INSTALLED AND WEDGE BETWEEN MCD DOOR SEAL AND SEAL DEPRESSOR. REPAIRS TO MCD SEAL DEPRESSOR COMPLETED ON NEXT ITEM OF THIS LP. PRESSURIZED AIRCRAFT TO 4.0 PSI UPON COMPLETION, NO LEAK FOUND AT THIS TIME, REF B767 AMM 05-51-24-782-001.