AN HS125-800 PLT RPTS WAKE TURB AND GAR BEHIND A B737 ON FINAL AT SVMI AFTER ATC DID NOT ADVISE THEM OF SLOWING TFC.

Narrative

DURING THE DSCNT AND LNDG INTO THE ARPT (SVMI) WE HAD TO EXECUTE A MISSED APCH 8 MI FROM THE THRESHOLD OF THE RWY 10 DUE TO WAKE TURB. DSCNT PROFILE: DURING THE ILS APCH TO RWY 10 WE NOTICED PARALLELING TARGET. TARGET WAS 2000 FT ABOVE OUR ALT AND ABOUT OUR 10 O'CLOCK POS; WITH A VECTOR FLT PATH INTERCEPTING OUR 12 O'CLOCK POS FLT PATH. THE TARGET WAS TOO HIGH AND TOO CLOSE TO EXECUTE THE SAME APCH WE WERE FLYING (NOT IN STABILIZED PROFILE). SHORTLY AFTER WE NOTICED THE TARGET RAPIDLY DSNDING WITH A SPD REDUCTION. OUR LAST SPD CLRNC WAS 180 KTS; HOWEVER; WHEN WE CONTACT THE TARGET VISUALLY WE NOTICED A B737 WAS ONLY 3.5 MI FROM OUR ACFT AND 1500 FT ABOVE US EXECUTING S-TURNS. WE INITIATED AN IMMEDIATE SPD REDUCTION. HOWEVER; IT WAS TOO LATE. AT THIS TIME; FO AND MYSELF BEGIN TO GET READY FOR AN EVASIVE MANEUVER FOR WAKE TURB. MAIQUETIA APCH CTL ASKED US IF WE HAD THE B737 IN SIGHT; AND WE REPLIED BY SAYING YES WE DID. SHORTLY AFTER MAIQUETIA APCH CTL CLRED US TO FOLLOW THE B737 FOR A VISUAL APCH AND TO CONTACT THE TWR ON FREQ 118.1. DURING THE ENTIRE APCH; THE MAIQUETIA APCH CTL NEVER ADVISED US OF CONVERGING TFC OR SPD REDUCTION. AT THIS POINT WE EXPERIENCE A SEVERE UNCOMMANDED L ROLL OF 45 DEGS; A L YAW OFF CTR BY 20 DEGS AND A WINDSHEAR EFFECT OF ADVERSE SPD REDUCTION OF -15 KTS FOLLOWED BY THE ACTIVATION OF THE STICK SHAKER. INDICATED AIRSPD AT THE TIME OF STICK SHAKER WAS 160 KTS; FLAPS 25 DEGS GEAR DOWN. NOTE: FROM THE TIME THE TWR ASKED US IF WE HAD THE B737 IN SIGHT TO THE TIME OF THE OCCURRENCE WAS LESS THAN 30 SECONDS; GIVING US VERY LITTLE TIME TO EVALUATE AND ACCEPT OR DENY A VISUAL CLRNC. I EXECUTED A MISSED APCH ASSUMING WINDSHEAR PROCS. AFTER I REGAINED CTL OF THE ACFT; I MADE A L TURN TO THE N TO EXIT THE WINGTIP VORTICES AND EXECUTE A MISSED APCH. ACTING FO ADVISED THE MAIQUETIA TWR WE WERE ABORTING THE APCH DUE TO MODERATE TO SEVERE WAKE TURB. HOWEVER; THE TWR NEVER RESPONDED EVEN AFTER FO MADE 3 ATTEMPTS FOR RADIO CONTACT. HAVING NO RESPONSE FROM THE TWR; WE DECIDED TO EXECUTE THE PUBLISHED MISSED APCH PROC. HOWEVER; DURING MISSED APCH CLBING TO THE PUBLISHED MISSED APCH ALT AND FLYING TO THE MISSED APCH FIX WE NOTICED A DC9 CONVERGING AT OUR SAME ALT. FOR SAFETY I CLBED TO 5000 FT TO AVOID THE DC9 AND I CONTINUE ON A HDG OF 020 DEGS. HAVING NO RADIO CONTACT WITH THE TWR; WE CALLED OUR PREVIOUS FREQ 120.1. AT THIS POINT MAIQUETIA DEP CTL GAVE US A HDG OF 250 DEGS FOR A DOWNWIND LEG BACK FOR THE APCH. THE SECOND APCH AND LNDG WAS UNEVENTFUL.