Narrative:

We were cleared for the approach and approximately 6-7 mi from hestr OM, as we were about to configure for landing, we heard 'terrain, terrain.' we performed the emergency procedure and during climb the warning changed to 'whoop, whoop, pull up.' warning ceased at 3000 ft and we leveled off at 4000 ft. ATC was advised as soon as possible given radio congestion. We were given vectors around for a normal approach and landing.

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Original NASA ASRS Text

Title: MLG FLC HAS GPWS ALERT ACTIVATE WHEN AT PROPER ALT FOR POS ON APCH.

Narrative: WE WERE CLRED FOR THE APCH AND APPROX 6-7 MI FROM HESTR OM, AS WE WERE ABOUT TO CONFIGURE FOR LNDG, WE HEARD 'TERRAIN, TERRAIN.' WE PERFORMED THE EMER PROC AND DURING CLB THE WARNING CHANGED TO 'WHOOP, WHOOP, PULL UP.' WARNING CEASED AT 3000 FT AND WE LEVELED OFF AT 4000 FT. ATC WAS ADVISED ASAP GIVEN RADIO CONGESTION. WE WERE GIVEN VECTORS AROUND FOR A NORMAL APCH AND LNDG.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.