As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING CLIMBOUT AT APPROXIMATELY 500 MSL ALT DISAGREE DISPLAYED BOTH PFDS. ALT DISAGREED BY 350 - 400 BETWEEN CAPTAIN AND FIRST OFFICER. STANDBY AGREED WITH FIRST OFFICER ALT INDICATION. FOUND LT STATIC PORTS BLOCKED. OBSTRUCTION WAS REMOVED. INSPECTED, FLUSHED, AND LEAK CHECKED.