As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE, AIRCRAFT WOULD NOT PRESSURIZE AT ALL. MANUAL CONTROLLER WOULD NOT FUNCTION. RETURNED TO ELKO. REMOVED AND REPLACED AUTO PRESSURIZATION CONTROLLER IAW EMB MM 21-30-01. AUTO PRESSURIZATION OPS CHECKS GOOD IAW EMB MM 21-30-00.