Narrative:

On a scheduled departure from mexico city to los angeles, WX clear and no factor. Clearance from mexico clearance delivery was: UJ12 gdl, UJ3 ppe, flight plan route, climb and maintain FL350 leona 1 departure, and squawk code. As we began our pushback, mexico city went into a runway change. Aircraft were now departing runway 23L&right as opposed to runway 5L&right. Clearance from ground was to taxi to runway 23L with the jusco 2 departure. Taxi out and takeoff uneventful. Shortly after contact with departure control was established and approximately 2.5 NM west of plaza NDB, we were asked 'what departure are you flying?' captain responded with our assigned SID, the jusco 2. We were then informed that we were 'off procedure, turn right to 350 degrees, maintain VMC to 14000 ft.' at 14000 ft we were given a heading of 250 degrees to join cleared airway. Mexico departure informed us at this time that we were supposed to be on the otomi 2 departure and to 'listen more carefully in the future.' remainder of departure was uneventful.

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Original NASA ASRS Text

Title: AFTER THEIR DEP FROM MEX, AN ACR FLC WAS INFORMED BY THE DEP CTLR THAT THEY WERE ON THE WRONG DEP AND ASSIGNED A NEW INTERCEPT FOR THE CORRECT COURSE. THE FLC RPTS THAT THE RWYS HAD BEEN CHANGED AT MEX AND THAT THEY WERE GIVEN A NEW SID ASSIGNMENT DURING TAXI. THE FLC UNDERSTOOD THAT THEY WERE TO FLY THE JUSCO 2 DEP, AND THE INTERVENING CTLR SAID, 'OTOMI 2.'

Narrative: ON A SCHEDULED DEP FROM MEXICO CITY TO LOS ANGELES, WX CLR AND NO FACTOR. CLRNC FROM MEXICO CLRNC DELIVERY WAS: UJ12 GDL, UJ3 PPE, FLT PLAN RTE, CLB AND MAINTAIN FL350 LEONA 1 DEP, AND SQUAWK CODE. AS WE BEGAN OUR PUSHBACK, MEXICO CITY WENT INTO A RWY CHANGE. ACFT WERE NOW DEPARTING RWY 23L&R AS OPPOSED TO RWY 5L&R. CLRNC FROM GND WAS TO TAXI TO RWY 23L WITH THE JUSCO 2 DEP. TAXI OUT AND TKOF UNEVENTFUL. SHORTLY AFTER CONTACT WITH DEP CTL WAS ESTABLISHED AND APPROX 2.5 NM W OF PLAZA NDB, WE WERE ASKED 'WHAT DEP ARE YOU FLYING?' CAPT RESPONDED WITH OUR ASSIGNED SID, THE JUSCO 2. WE WERE THEN INFORMED THAT WE WERE 'OFF PROC, TURN R TO 350 DEGS, MAINTAIN VMC TO 14000 FT.' AT 14000 FT WE WERE GIVEN A HDG OF 250 DEGS TO JOIN CLRED AIRWAY. MEXICO DEP INFORMED US AT THIS TIME THAT WE WERE SUPPOSED TO BE ON THE OTOMI 2 DEP AND TO 'LISTEN MORE CAREFULLY IN THE FUTURE.' REMAINDER OF DEP WAS UNEVENTFUL.

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.