As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FAIL LIGHTS CAME ON AT FL320, SWITCH TO ALTN. GROUNDED - YES. (RESOLVED ON W/O: 1974753 TASKCARD: N/R-00002 ) REMOVED & REPLACED #1 CABIN PRESSURE CONTROLLER REF AMM 21-31-01. PERFORMED GROUND TEST REF AMM 21-31-00. NO DEFECT NOTED. THIS CLEARS MEL 21-31-01A. C/N: 27071947.MAINT & OPERATIONAL PROCEDURE REVERSED. SEAMC JOE NOTIFIED.