As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
-RVSM- SHIP 197 ALT DISAGREE EICAS MESSAGE AT FL320 CA AND FO ALTIMETERS OFF BY 200 FT. FO ALTIMETER WAS ERRATIC DURING FLIGHT, FO ALTIMETER SHOWED FL315 AND STBY 325. INSPECTED PITOT STATIC AND AOA VANES FOR DEFECTS. NONE FOUND. PERFORMED ADC L AND R TEST IAW AMM 34-12. TEST PASSED. BOTH ALTIMETERS FUNCTION NORMALLY.