Narrative:

Flight operating on an ICAO descent via clearance; ATC issued a new altitude to descend to but did not specifically cancel star altitude constraints. Confused with the differences between the FAA and ICAO descend via clearance requirements (FAA needs to re-issue descent via for constraints to be in effect; ICAO does not) we descended below the star constraints. Additionally; later on the flight; during approach; the pilot flying failed to operate below the speed limits [160] established for mexico's airspace and for the runway 5R ILS approach.

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Original NASA ASRS Text

Title: Air Carrier First Officer reports confusion descending into MMMX over RNAV descent criteria for ICAO vs. FAA. The 160 KT speed restriction on the ILS 5R approach is also overlooked.

Narrative: Flight operating on an ICAO descent via clearance; ATC issued a new altitude to descend to but did not specifically cancel star altitude constraints. Confused with the differences between the FAA and ICAO descend via clearance requirements (FAA needs to re-issue descent via for constraints to be in effect; ICAO does not) we descended below the star constraints. Additionally; later on the flight; during approach; the pilot flying failed to operate below the speed limits [160] established for Mexico's airspace and for the Runway 5R ILS approach.

Data retrieved from NASA's ASRS site as of July 2013 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.