DEPARTING B727 PIC FROM SVMI; FO; QUESTIONS OWN FLC AND ATC AS TO WHAT CAUSED THE CONFLICT WITH DC9 ON GAR.

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SVMI RWY 9L (MARES #1 DEP) GA TO DARPA (_______ ILS). I'VE BEEN FLYING ALMOST EXCLUSIVELY FROM VENEZUELA TO MIA FOR THE LAST 5 MONTHS (PREDOMINATELY FROM SVMI). I AM A CAPT AND WAS GIVING OPERATIONAL EXPERIENCE TO A VEN FO WHO WAS THOROUGHLY FAMILIAR WITH SVMI; AND THE B727 -- 1200 HRS AS FO (CURRENT -- LAST FLYING WITH ACR VEN TO UNITED STATES 5 MONTHS AGO). WE WERE HOLDING SHORT #1 AND TWR ASKED IF WE COULD TAKE AN IMMEDIATE AFTER LNDG DC9 TFC. I SAID YES. I LOOKED OUT AND SAW ANOTHER DC9 ON APCH AND THE SPACING LOOKED OK TO ME. WE WERE CLRED TO POS AND HOLD. WE DID 'BELOW THE LINE;' TWR THEN CLRED US TO TAKE OFF AND CONTACT DEP ON 120.1 AFTER AIRBORNE. AT THIS TIME THE PREVIOUS LNDG TFC TAIL WAS JUST STARTING TO TURN OFF THE RWY. WE WAITED APPROX 10 SECONDS UNTIL THE TAIL WAS OFF THE RWY (HUMP IN RWY AT SVMI -- CAN ONLY SEE TAILS) AND COMMENCED TKOF ROLL. DURING THE LATTER PART OF OUR TKOF ROLL; SOME SPANISH WAS SPOKEN ON FREQ. (FO LATER TOLD ME IT WAS DC9 PLT SAYING HE DIDN'T THINK HE WAS GOING TO LAND.) I DON'T SPEAK SPANISH. WE GOT AIRBORNE. I SWITCHED TO DEP (120.1); TOLD HIM WE WERE ON THE MARES DEP OUT OF 500 FT CLBING TO 4000 FT. HE SAID MAINTAIN HDG 085 DEGS AND SOMETHING ELSE. BY THAT TIME; WE WERE ABOVE 750 FT AND FO WAS TURNING L ON MARES APPROX 060 DEG HDG. I SAID 'TURN R TO 085 DEGS.' HE DID SO. ATC WAS TALKING TO ANOTHER ACFT (SPANISH). I SAID 'PLEASE CLARIFY AFTER 085 DEGS.' NO ANSWER -- STILL TALKING SPANISH TO ANOTHER ACFT. (FO AND FE BOTH SPOKE SPANISH; FIRST LANGUAGE.) I SAY; 'WHAT'S GOING ON? DID ANOTHER ACFT DEPART RWY 8 OR WHAT?' (WE WERE STILL CLBING APPROX 1200-1500 FT. ABOUT THIS TIME I SAW A DC9 ABOVE AND TO THE REAR (A BIT) OUT OF THE CAPT'S REAR WINDOW; HDG BASICALLY PERPENDICULAR TO US APPROX 360 DEGS. HOW CLOSE? ENOUGH TO MAKE US UNCOMFORTABLE. NO JET WASH; NO TURB; NO EVASIVE ACTION BY EITHER ACFT. NO TCASII WARNING. I SAID TO DEP; WE HAVE THE DC9 IN SIGHT. HE ROGERED. THE DC9 SAID HE NEVER SAW US (IN SPANISH). EVERYBODY THEN CONTINUED WITH THEIR BUSINESS. WE WERE CLRED TO CONTINUE ON SPD AND CLB TO FL280 OR FL310 (DON'T REMEMBER); SWITCH TO MAIQUETTA CTL (128.5) ETC. END OF EVENT. AS USUAL; A LOT OF FACTORS COME INTO PLAY: 1) US -- BUSY. A) I SHOULD NOT HAVE ACCEPTED AN IMMEDIATE TKOF WITH AN OPERATING EXPERIENCE PLT. BUT THIS GUY WAS SO GOOD. (I FLEW WITH HIM THE PREVIOUS DAY); EXPERIENCED (1200 HRS IN TYPE). I DID NOT SEE ANY PROB WITH IT. HIS IS THE BEST I'VE TRAINED IN 5 MONTHS. B) SPANISH/ENGLISH -- THE SPANISH SPEAKING FO AND FE SHOULD HAVE TOLD ME WHAT WAS GOING ON VIS-A-VIS SPANISH ATC TO IMPROVE MY SITUATIONAL AWARENESS. C) XPONDER/TCASII. (FO RESPONSIBILITY.) I DO NOT THINK THE XPONDER WAS SELECTED TO ATC #1 AND/OR THE TCASII SWITCH MAY HAVE BEEN OVERROTATED TO THE ATC #2 STANDBY POS INSTEAD OF ATC #1 TA/RA. THESE ARE 2 DIFFERENT BUT ADJACENT SWITCHES. D) THE REASON WHY I OR ANYBODY ELSE DIDN'T NOTICE THIS ON THE RADAR DISPLAY IS BECAUSE WE WERE FOCUSING ON THE PERVIOUS LNDG TFC TAIL TO MAKE SURE HE WAS CLR BEFORE WE STARTED OUR TKOF ROLL. TWR: 1) NEVER GIVEN IMMEDIATE. 2) WHEN DC9 WENT AROUND; SIMPLY SAY TURN L; ENTER THE TFC PATTERN FOR RWY 9L OR DO FULL MISSED APCH; BUT MAINTAIN VISUAL ON B727. LNDG DC9: 1) REALLY; NOTHING WRONG -- MAYBE WAS NOT QUICK ENOUGH EXITING RWY -- SITUATIONAL AWARENESS? APCHING DC9: 1) UPON GAR DECISION; TOLD TWR HE WANTED TO TURN L AND ENTER THE VFR TFC PATTERN OR ON THE MISSED APCH SHOULD HAVE KEPT US IN SIGHT. DEP 120.1: 1) LET US CONTINUE ON MARES; AND TOLD THE DC9 TO GO STRAIGHT AHEAD -- MIGHT HAVE BEEN SAFER. COMMENTS: 1) VENEZUELA'S ATC GOES FROM OK (128.5 MAIQUETIA CTL) TO SO-SO (120.5 SVMI APCH) TO WEAK. THE TWR IS THE WEAKEST LINK IN THE VENEZUELAN CHAIN. (MAIQUETIA/VALENCIA/MARICARBO) IN MAIQUETIA OVER THE LAST 5 MONTHS; I'VE WITNESSED A LOT OF MIS-CLRNCS/BUNGLED CALLS ENRTE. ALSO; THIS STANDARD POLICY IN ALL 3 ARPTS 'YOU ARE CLRED FOR TKOF CONTACT DEP ON XXX.XX WHEN AIRBORNE' IS NOT GOOD. 2) ALSO COMMAND OF ENGLISH DEGRADATION IS IN THE SAMEORDER; BUT MAQ IS AN ENGLISH MAJOR COMPANY WITH VAL AND MAR.