As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REACHING 8700FT MSL THE CABIN LOST PRESSURIZATION AND ALMOST IMMEDIATELY STARTED TO REPRESSURIZE. CREW FOLLOWED THE QRH AND CHECKLIST AND CONTACTED DISPATCH TO RECALCULATE FUEL BURN AT FL100 OVER ALB TO IAD WITH NEW ATC ROUTING. FLIGHT CONTINUED UNPRESSURIZED AND ARRIVED IAD WITHOUT ANY FURTHER COMPLICATION.