As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALTITUDE SELECTOR KNOB INOP. UNABLE TO CHANGE ALTITUDE FROM 3190 0. NON-RVSM COMPLIANT FOR FORIEGN AIRSPACE. REPLACED MCP REF IPC 22-11-02-01. MODE CONTROL PANEL GRND TEST PASSED REF AMM 22-10-00. ACFT RETURNED TO CAT-III STATUS REF AMM 22-10-99.