AN MD83 MISUNDERSTANDS CLRNC AND TWR DOES NOT COPY INCORRECT READBACK AS IT DEPARTS FROM SJD; MEXICO. LANGUAGE USAGE IS A PROB.

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AT THE SJD ARPT WE WERE 'CLRED TO PUSH; TAXI VIA TXWY B TO RWY 16.' A NEARBY B727 CALLED FOR TAXI CLRNC; HAVING TO PWR UP AND MAKE A 180 DEG TURN OUT OF THE TERMINAL PARKING AREA. HE WOULD HAVE BLASTED US IN HIS PWR UP AND TURN. SO; TWR CALLED US; 'ARE YOU READY TO TAXI?' I ANSWERED AFFIRMATIVE AS FO HAD GOTTEN WT AND BAL NUMBERS FROM OPS AND THE START WAS COMPLETE. TWR CLRED US TO 'TAXI INTO POS RWY 16.' WE DID THE AFTER-START AND VERY SHORT TAXI INTO POS RWY 16 WHILE SETTING BUGS AND TAXI CHKLIST. TWR CALLED WITH OUR CLRNC (IN MEXICO THE CLRNC IS NORMALLY READ DURING TAXI AFTER TWR HAS YOU UNDERWAY AND COORDINATES BY PHONE WITH CTR). BUT PRIOR TO READING OUR CLRNC TWR SPOKE VERY RAPIDLY IN SPANISH WITH AN INBOUND B727. THEN WITHOUT EVEN SLOWING DOWN HE RATTLED OFF OUR CLRNC IN HIGHLY ACCENTED ENGLISH. WE COPIED 'CLRED TO PHX VIA V1 LAP UJ9 HMO AS FILED; CLB AND MAINTAIN FL310 UNTIL FURTHER ADVISED; CLB OVER THE VOR; RPT OVER THE VOR.' NOTE: OUR FLT PLAN WAS VICTOR ONE WEST BUT THAT'S NOT WHAT HE READ. WE READ BACK OUR CLRNC VERBATIM. TWR'S RESPONSE WAS 'TFC INBOUND B727 FROM 110 DEG RADIAL 50 MI DSNDING TO 5000 FT FOR L TFC; YOU ARE CLRED FOR TKOF RWY 16 WITH WIND FROM 180 DEGS AT 12 KTS; RPT OVER THE VOR.' WE DEPARTED AND CALLED OVER THE VOR AT 7000 FT CLBING (MCA IS 6600 FT). HE SAID FOR US TO RPT ON COURSE; CLB TO AND MAINTAIN FL310. AT THIS TIME HE HAD AN INBOUND MD80 10 MI N DSNDING OUT OF 5500 FT; A B727 OUT OF 5000 FT DSNDING ON L BASE; AND THE CLBING B727 BEHIND US WHO JUST TOOK OFF; THROUGH 4000 FT AT 7 MI S COMMENCING L TURN TO FOLLOW US NBOUND. TWR ASKED THE INBOUND MD80 TO MAKE A L 360 DEG TO ALLOW SPACING WITH THE INBOUND B727 ON L BASE. TWR THEN ASKED OUR POS AND WE RPTED CLBING THROUGH 12500 FT AT 10 MI N RADIAL 320 DEGS ESTABLISHED ON COURSE. HE CAME BACK THAT WE WERE 'SUPPOSED TO BE ON VICTOR ONE WEST RADIAL 303 DEGS.' (IN FACT; VICTOR ONE WEST IS ON THE SID RADIAL 305 DEGS.) 'YOU ARE NOW CLRED DIRECT LA PAZ.' WE RESPONDED THAT WE HAD 'COPIED VICTOR ONE AND READ THAT BACK; PROCEEDING DIRECT LA PAZ.' THROUGH 18000 FT WE WERE HANDED OFF TO MAZATLAN CTR. THERE WAS NEVER ANY TFC CONFLICT ON THIS DEP; JUST AN OVERLOADED CTLR AND CLRNC MISUNDERSTANDING.