What was found
DURING CLIMB-OUT AT 15000 FT, HEARD WHISTLING NOISE FROM CABIN DOOR AT 17500 FT HEARD POPPING NOISE CABIN THEN CLIMBED AT 4600 FT/MIN. DESCENDED TO 8000 FT RAN QRH. EMERGENCY DECLARED, EN ROUTE TO ATL, A/C DIVERTED TO MKE DUE TO MTC.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB-OUT AT 15000 FT, HEARD WHISTLING NOISE FROM CABIN DOOR AT 17500 FT HEARD POPPING NOISE CABIN THEN CLIMBED AT 4600 FT/MIN. DESCENDED TO 8000 FT RAN QRH. EMERGENCY DECLARED, EN ROUTE TO ATL, A/C DIVERTED TO MKE DUE TO MTC.