As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - FLIGHT 2272 - DESCENDING THROUGH 9000 FEET, CABIN LOST PRESSURE AND RATE PEGGED AT MAX. NO NOISES OR LEAKS NOTED. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE LDC ALT ON THE CABIN PRESS CONTROLLER SET 48 FEET. CONTROLLER WAS SET TO 400 FEET. OPERATIONAL CHECK WAS GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE. NO PART REPLACED.