As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT OF MSP, NOTICED THE F/O'S ALTIMETER BEGIN TO LAG ABOUT 500 FEET BEHIND THE CAPTAINS ALTIMETER. WHEN LEVELED OUT AT 7000 FEET THE F/O ALTIMETER READ ABOUT 400 FEET LOWER THAT CAPTAINS AND STANDBY ALTIMETERS. MAINTENANCE REPLACED F/O'S ALTIMETER P/N ON-OFF 64111-900-1, S/N ON 2519, S/N OFF 4069. NR 2 PITOT/STATIC SYSTEM OPS/LEAKS CHECSK GOOD IAW SF340 MM CH 34.