As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HEARD A POP IN FLIGHT, POST FLIGHT INSPECTION REVEALED CAPTAIN'S SIDE WINDOW INNER PANE HAD CRACKED IN SEVERAL AREAS. REMOVED AND REPLACED CAPTAIN'S LEFT SIDE WINDOW IAW CRJ AMM 56-12-01. PRESSURIZATION CHECKED WITH NO DEFECTS NOTED, RETURNED AIRCRAFT TO SERVICE.