As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PASSENGER OXYGEN TEST, ALTITUDE PRESSURE RELEASED AT 13,000 FT IAW AMM 35-22-00-700-801, SHOULD RELEASE AT 14,000 FT PLUS OR MINUS 350 FT. ACFT GROUNDED. REMOVED AND REPLACED PRESSURE SWITCH AND INSTALLATION TESTED GOOD IAW AMM 35-22-41.