As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA - FLT 779 - LEVEL AT FL280, FLOW LT ILLUMINATED AND CABIN ALT STARTED CLIMBING. PRESSURIZATION CONFIRMED FULL FORWARD. DESCENDED INITIATED AND CABIN PRESSURIZATED AT 17000 FLOW LIGHT OUT COMPLIED WITH QRH PROC. REMOVED AND REPLACED 7 CONTROLLER/SELECTOR WITH 5 SELECTOR. PERFORMED RATE LOGIC ALTITUDE SELECTION AND FLOW LIGHT CHECKS. (M)