As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT INTO ATL FROM VPS, SMOKE OCCURRED IN THE CABIN DURING OPERATION OF THE RT PACK. QRH PROCEDURES WERE COMPLIED WITH AND THE AIRCRAFT LANDED SAFELY IN ATL. MAINTENANCE REMOVED AND REPLACED THE P2.5 TO P3 SWITCHING VALVE. OPS CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)