As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALTITUDE WARNING IN FLIGHT PERF BITE ON BOTH CABIN PRESS CTLRS. PRESS CTLR #1 SHOWS LEG 00 ONE FAULT. MANUAL MODE FAULT CODE 058. CTLR #2 SHOWS LEG 00 ONE FAULT. MAUAL MODE FAULT CODE 017. PRESS AC AND NO LEAKS NOTED. WAS ABLE TO MAINTAIN CABIN PRESS WITH ONE PACK. PERF CABIN ALT WARNING SWITCH FUNCTIONAL TEST REFF AMM 21-33-00-000-801. ALL THREE SWITCHES CHKS OK NO FAULTS NOTED. REF LOG PAGES 7622815 AND 7622827 ACCOMPLISHED RT ENGINE HEALTH CHECK AND REPLACED CABIN PRESSURE CONTROLLER OK FOR SERVICE