What was found
LOST PRESSURIZATION ON CLIMB-OUT. REMOVED AND REPLACED ELECTRONEUMATIC OUTFLOW VALVE IAW EMB AMM 21-31-03. OPERATIONAL CHECK GOOD, RETURNED AIRCRAFT TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LOST PRESSURIZATION ON CLIMB-OUT. REMOVED AND REPLACED ELECTRONEUMATIC OUTFLOW VALVE IAW EMB AMM 21-31-03. OPERATIONAL CHECK GOOD, RETURNED AIRCRAFT TO SERVICE.