As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW WAS STARTING CRUISE WHEN THEY LOST PRESSURIZATION, DECLARED EMERGENCY AND DID EMERGENCY DESCENT FROM 17000 FT TO 10000 FT FLIGHT WAS EN ROUTE FROM ANI TO ANC, FLIGHT CONTINUED TO ANC WITHOUT ANY DIFFICULTY. MX FOUND THAT OUTFLOW VALVE BAD, PART WAS REPLACED AND PRESSURIZATION CHECK WAS NORMAL.