As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 7628 ORD TO HPN, AFTER TAKEOFF CREW EXPERIENCED VIBRATION IN FLIGHT, DECLARED AN EMERGENCY AND RETURNED TO FIELD. MAINT REPORTS RT PACK RAM AIR INLET LOOSE. ACFT FERRIED TO IND. MAINT REPLACED THE RIGHT HAND DUEL HEAT EXCHANGER.