As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
3921 IAD-BTV A/C 342NG CA REPORTED AIRCRAFT LOST PRESSURIZATION CAUSING A LOUD HISSING NOISE DURING DESCENT FROM FL150. BTV WAS THE CLOSEST SUITABLE AIRPORT. THE FLIGHT LANDED SAFELY, NO EMERGENCY DECLARED. THERE ARE NO KNOWN PASSENGER COMPLAINTS AT THIS TIME. MX CONTROL IS AWAITING COMPLETION OF CONTRACT MX INSPECTION. REMOVED AND REPLACED PRESS RELIEF VALVE. ALSO REMOVED AND REPLACED REAR CABIN DOOR SEAL. ALL CHECKS GOOD.