Based on the phrasing of the general conditions, it would appear TANGO fares would not qualify for mileage as these are still giving 50% mileage, and are non-status. However, TANGO PLUS fares would qualify as these are now granted 100% mileage credit, as are all other AC economy fares included in the LATITUDE and LATITUDE PLUS categories. However, I-class has been removed from the TANGO bucket, and is now used as an ellite certificate upgrade class, though it too only earns 100% mileage credit. You'd really have to confirm this with FREQUENTA however. [I didn't even know you could earn mileage on AC flights as MX left STAR. Didn't it merge with AERO MEXICO?]