LGT RECEIVES CLRNC TO CROSS RWY BUT QUERIES GND 3 TIMES TO ASSURE THEY UNDERSTAND CORRECTLY. ACCUSED OF RWY ENCROACHMENT.

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THE FOLLOWING IS MY RECOLLECTION OF EVENTS SURROUNDING SUPPOSED RWY ENCROACHMENT OF ACR X ONTO RWY 05L AT MEXICO CITY ON AUG/XX/94. WE LANDED ON RWY 05R AND WERE REQUESTED TO HOLD SHORT OF RWY 05L ON THE 'E' TXWY; WHICH WE ACKNOWLEDGED. AS WE APCHED THE RWY HOLD LINE; WE WERE CLRED TO CROSS RWY 05L. SIMULTANEOUSLY THE CTLR CLRED ANOTHER ACFT TO TAKE OFF ON RWY 05R. BECAUSE OF THE WAY THE INSTRUCTIONS WERE GIVEN; AS ONE XMISSION; I REQUESTED THE FO DOUBLE CHK. WE RECEIVED THE SAME INSTRUCTIONS; AGAIN A DOUBLE XMISSION. THE FO ASKED A THIRD TIME IF WE WERE CLRED TO CROSS RWY 05L AND; AGAIN; WE RECEIVED THE SAME INSTRUCTIONS. I LOOKED; SAW NOTHING ON THE RWY; AND CROSSED APPROX 30 SECONDS LATER. AS WE WERE PREPARING TO LEAVE; WE WERE TOLD WE HAD A RWY ENCROACHMENT. I SPOKE BY TELEPHONE TO THE CTLR AND REQUESTED THAT HE PULL THE TWR TAPES. HE REPLIED THAT HE NEEDED SPECIAL AUTHORIZATION TO DO THAT. HE INSISTS THAT HE SPOKE TO US ONLY ONE TIME AND THAT WAS TO TELL US TO HOLD SHORT. I INSIST JUST AS ADAMANTLY; THAT SOMEONE CLRED US 3 TIMES TO CROSS. I HAVE BEEN GRANTED PERMISSION TO PULL THE CIRCUIT BREAKERS ON OUR COCKPIT VOICE RECORDER; IN AN ATTEMPT TO PRESERVE THIS CONVERSATION BTWN US AND THE CTLR. IF THEY PULL THE TWR TAPES AT MMMX; I CAN ASSURE ANYONE THAT THEY WILL HAVE FURTHER VERIFICATION. AS AN ASIDE; MMMX AND OTHER ARPTS IN CENTRAL AND SOUTH AMERICA ARE THE ONLY ARPTS THAT I HAVE FLOWN INTO THAT SEEM TO USE SPANISH AS THE PRIMARY LANGUAGE. ALL OTHER COUNTRIES USE ENGLISH. THE RADIOS IN THIS PART OF THE WORLD MODULATE POORLY AND MANY CTLRS ARE DIFFICULT TO UNDERSTAND (THOUGH THIS CTLR SPOKE VERY GOOD ENGLISH). THE POINT IS THAT IT'S DIFFICULT TO KNOW WHERE WE ARE AND WHAT OTHER ACFT ARE DOING WHEN WE CAN'T UNDERSTAND WHAT'S BEING SAID. IT ALL ADDS TO THE CONFUSION.