Narrative:

Normal taxi to 05L at mexico city. Received takeoff clearance form tower. Competed takeoff checklist. First officer at controls for takeoff. While accelerating, the so saw a foreign air carrier B777 entering runway 05L, from the left and called out 'airplane.' captain, myself, applied maximum braking and reverse thrust. Upon realizing impact was imminent, I advised crew and simultaneously steered the aircraft off the runway to the right in order to avoid collision. After coming to a stop, completed emergency evacuation checklist and exited the aircraft via ladder supplied by emergency personnel. Remained in vicinity of aircraft until appropriate authorities, including our maintenance people arrived to service aircraft. The aircraft came to rest between runway 05L and runway 05R just north of B6 taxiway. This is the taxiway the B777 entered the runway from. There were no injuries on either aircraft. Our aircraft settled in the mud up to the engine pods. Upon meeting the B777 crew, they expressed deep thanks for averting catastrophe and took responsibility for the runway incursion. Suggest 'extreme' caution taxiing in mexico city especially at night.

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Original NASA ASRS Text

Title: DC-8-73 CREW ONTO KOF ROLL, ON RWY 05L HAD A B777 ENTER THE TKOF RWY AT TXWY B6, DIRECTLY AHEAD OF THEM AT MMMX. THE DC-8 CAPT STEERED THE ACFT OFF THE RWY TO THE RIGHT TO AVOID A COLLISION WITH THE B777.

Narrative: NORMAL TAXI TO 05L AT MEXICO CITY. RECEIVED TKOF CLRNC FORM TWR. COMPETED TKOF CHECKLIST. FO AT CTLS FOR TKOF. WHILE ACCELERATING, THE SO SAW A FOREIGN ACR B777 ENTERING RWY 05L, FROM THE LEFT AND CALLED OUT 'AIRPLANE.' CAPT, MYSELF, APPLIED MAXIMUM BRAKING AND REVERSE THRUST. UPON REALIZING IMPACT WAS IMMINENT, I ADVISED CREW AND SIMULTANEOUSLY STEERED THE ACFT OFF THE RWY TO THE RIGHT IN ORDER TO AVOID COLLISION. AFTER COMING TO A STOP, COMPLETED EMER EVACUATION CHECKLIST AND EXITED THE ACFT VIA LADDER SUPPLIED BY EMER PERSONNEL. REMAINED IN VICINITY OF ACFT UNTIL APPROPRIATE AUTHORITIES, INCLUDING OUR MAINT PEOPLE ARRIVED TO SVC ACFT. THE ACFT CAME TO REST BETWEEN RWY 05L AND RWY 05R JUST N OF B6 TXWY. THIS IS THE TXWY THE B777 ENTERED THE RWY FROM. THERE WERE NO INJURIES ON EITHER ACFT. OUR ACFT SETTLED IN THE MUD UP TO THE ENG PODS. UPON MEETING THE B777 CREW, THEY EXPRESSED DEEP THANKS FOR AVERTING CATASTROPHE AND TOOK RESPONSIBILITY FOR THE RWY INCURSION. SUGGEST 'EXTREME' CAUTION TAXIING IN MEXICO CITY ESPECIALLY AT NIGHT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.