ACFT CLEARED FOR MENA NDB APCH AND TO MAINTAIN 5000 FT MSL UNTIL ESTABLISHED ON THE APCH. ACFT DESCENDED TO 4800 FT MSL ON APRX GRND TRACK OF 040 TO 030 DEG AFTER NDB PASSAGE. ACFT THEN TURNED TO A GROUND TRACK OF 116 DEG. AFTER 12 SECONDS THE ACFT TURNED TO A GROUND TRACK OF 350 DEG DURING WHICH THE GROUND SPEED DECREASED TO 93 KTS. THE ACFT DESCENDED TO 4600 FT MSL WITH GROUND SPEED INCREASING TO 140 KTS. N68152 REPORTED 'WE'VE BROKEN BELOW - WILL CANCEL IN JUST A MOMENT.' RADAR CONTACT WAS LOST WITH THE ACFT DESCENDING TO 3000 FT MSL ON A HEADING OF 304 DEG. THE WRECKAGE WAS FOUND 6 MILES NW OF THE ARPT AT AN ELEV OF 2000 FT MSL. THE OUTBOUND APCH HEADING IS 080 DEG WITH PROCEDURE TURN HEADING OF 125 DEG AND 305 DEG. REPORTED WINDS ALOFT AT 5000 FT MSL, 4000 FT MSL AND 3000 FT MSL WERE 191 DEG AT 34 KTS, 169 DEG AT 30 KTS AND 151 DEG AT 32 KTS RESPECTIVELY.