As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST CABIN PRESSURIZATION AT FL290. CABIN PRESSURE ROSE TO 13500 PA AND STABILIZED. ON DESCENT, CABIIN PRESSURE DESCENDED WITH THE AIRCRAFT ALTITUDE. FOUND LT SQUAT SWITCH TO HAVE HIGH RESISTANCE AND CHANGING WITH PRESSURE ON ARM. REPLACED SWITCH WITH NEW IAW 560 MM 32-61-00. OPS CKED GOOD.