As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6217 - IN FLIGHT AT 17,000 FEET, THE CREW REPORTED A CABIN PRESSURE WARNING MESSAGE. THE AIRCRAFT DESCENDED TO 10,000 AND LANDED SAFELY IN PHX WHERE MAINTENANCE REPLACED THE PRESSURIZATION CONTROLLER. OPS CHECKED GOOD AND THE AIRCRAFT RETURNED TO SERVICE. (M)