AN EMB120 OVERSHOOTS ALT DURING DSCNT INTO ATL.

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ON MACEY ARR TO ATL RECEIVED STANDARD CLRNC (W OP) TO CROSS WOMAC INTXN AT 9000 FT MSL FROM ZTL. I DID. AT FREQ CHANGE THE NEXT CTLR VERIFIED ALT AND CLBED US TO 10000 FT AND TURNED US TO 275 DEG. I DID. AFTER LNDG IN ATL; GND CTL GAVE ME A PHONE NUMBER TO CALL ABOUT A POSSIBLE PLTDEV. JUL/XX/96 I CALLED ATL FAA AND WAS TOLD IT LOOKED LIKE AN OPERROR. THE CTR CTLR THOUGHT SHE STOPPED ME AT A HIGHER ALT; GAVE US A TURN; AND SLOWED US TO 190 KTS. THE TAPES ONLY SHOW US RECEIVING AND ACKNOWLEDGING THE SPD REDUCTION. THEY (FAA) TOLD ME BY PHONE NOT TO WORRY; IT LOOKED LIKE CTLR ERROR AND NOT TO BOTHER WITH A NASA FORM. THEY DID SAY I WAS OVERTAKING A COMPANY ACFT ALSO AT 9000 FT. WE HAD NO TCASII ALERT AND I DON'T KNOW HOW CLOSE WE WERE. SUPPLEMENTAL INFO FROM ACN 341960: APPROX XX45 AM EASTERN TIME; ABOUT 7 MI NE OF WOMAC WE WERE TOLD BY CTR TO LEVEL AT 10000 FT. WE IMMEDIATELY BEGAN TO BRING THE NOSE UP; ARRESTING THE DSCNT AT 9400 FT. THE SECOND TIME WE WERE TOLD TO LEVEL AT 10000 FT; I NOTED SOME URGENCY IN HIS VOICE LEADING ME TO BELIEVE THAT THERE WAS A PROB. I BELIEVE THERE WAS A POSSIBLE MISCOM BTWN THE CTLR WHO GAVE US THE WOMAC AT 9000 FT AND THE CTLR WHO QUERIED ABOUT OUR ALT.