Narrative:

After landing on runway 5R, MMMX, was cleared by tower to exit on taxiway east and hold short of runway 5L. Aircraft was slowed by captain and turned left onto taxiway east. After clearing runway, first officer contacted operations on #2 VHF, and asked the operations agent to state the gate number which the agent had been unable to state on initial radio contact about 20 mins before landing. Operations agent reply to the gate information request was, you are cleared to gate. The speakers and audio mixer switches were set in the cockpit in such a way that captain heard the agent's transmission at about the same volume level as the #1 VHF which was being used for ATC communications. Believing that it was a controller who said, you are cleared to gate, captain allowed the aircraft to continue to roll at taxi speed toward the intersection of taxiway east and runway 5L. He then looked down the runway for conflicting traffic, saw an air carrier X md-80 travelling slowly enough to turn safely at E2 taxiway and let the aircraft continue to roll slowly onto the edge of runway 5L. As it became apparent that the md-80 was not going to use taxiway E2 to captain and as it became apparent that 757 would not be stopped short of runway 5L, both first officer and the tower controller told captain to stop at about the same time he was applying the brakes to stop the aircraft which he did with about 2 ft of the nose over the east edge of the runway. The md-80 on rollout on runway 5L did not turn off at taxiway E2, but continued at taxi speed to taxiway B, its right wing tip clearing the nose of the 757 by about 30-40 ft at a safe rate of speed.

Related reports:

Google
 

Original NASA ASRS Text

Title: RWY INCURSION, UNAUTH RWY ENTRY.

Narrative: AFTER LNDG ON RWY 5R, MMMX, WAS CLRED BY TWR TO EXIT ON TXWY E AND HOLD SHORT OF RWY 5L. ACFT WAS SLOWED BY CAPT AND TURNED L ONTO TXWY E. AFTER CLRING RWY, FO CONTACTED OPS ON #2 VHF, AND ASKED THE OPS AGENT TO STATE THE GATE NUMBER WHICH THE AGENT HAD BEEN UNABLE TO STATE ON INITIAL RADIO CONTACT ABOUT 20 MINS BEFORE LNDG. OPS AGENT REPLY TO THE GATE INFO REQUEST WAS, YOU ARE CLRED TO GATE. THE SPEAKERS AND AUDIO MIXER SWITCHES WERE SET IN THE COCKPIT IN SUCH A WAY THAT CAPT HEARD THE AGENT'S XMISSION AT ABOUT THE SAME VOLUME LEVEL AS THE #1 VHF WHICH WAS BEING USED FOR ATC COMS. BELIEVING THAT IT WAS A CTLR WHO SAID, YOU ARE CLRED TO GATE, CAPT ALLOWED THE ACFT TO CONTINUE TO ROLL AT TAXI SPD TOWARD THE INTXN OF TXWY E AND RWY 5L. HE THEN LOOKED DOWN THE RWY FOR CONFLICTING TFC, SAW AN ACR X MD-80 TRAVELLING SLOWLY ENOUGH TO TURN SAFELY AT E2 TXWY AND LET THE ACFT CONTINUE TO ROLL SLOWLY ONTO THE EDGE OF RWY 5L. AS IT BECAME APPARENT THAT THE MD-80 WAS NOT GOING TO USE TXWY E2 TO CAPT AND AS IT BECAME APPARENT THAT 757 WOULD NOT BE STOPPED SHORT OF RWY 5L, BOTH FO AND THE TWR CTLR TOLD CAPT TO STOP AT ABOUT THE SAME TIME HE WAS APPLYING THE BRAKES TO STOP THE ACFT WHICH HE DID WITH ABOUT 2 FT OF THE NOSE OVER THE E EDGE OF THE RWY. THE MD-80 ON ROLLOUT ON RWY 5L DID NOT TURN OFF AT TXWY E2, BUT CONTINUED AT TAXI SPD TO TXWY B, ITS R WING TIP CLRING THE NOSE OF THE 757 BY ABOUT 30-40 FT AT A SAFE RATE OF SPD.

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.