As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, AIRCRAFT SLOWLY LOST PRESSURIZATION. A PASSENGER NOTICED NR 1 RIGHT CABIN WINDOW CRACKED. AN EMERGENCY WAS DECLARED AND A LANDING WAS MADE WITHOUT INCIDENT. DAMAGE FROM WINDOW WAS FOUND ON RIGHT PROPELLER AND RIGHT HORIZONTAL STABILIZER. RIGHT PROPELLER SENT TO PROP REPAIR STATION. RIGHT ENGINE INSPECTED PER ALLIED SIGNAL MM.