Sapphire - AAdvantage Platinum
Platinum is equivalent to oneworld Sapphire

AAdvantage PlatinumŽ members will be entitled to the following benefits across the oneworld network:

Priority check-in at Business Class check-in desks (where available), regardless of the class of service flown.
Preferred boarding (board at leisure).
Preferred seating.
Priority standby and waitlisting.

Entrance to all of the oneworld airlines' Business Class and airport lounges when travelling internationally*, regardless of the class of service flown on that day.

* Lounge access is not available when travelling solely on North American itineraries. North American itineraries are defined as travel within or between the USA, Canada, Mexico (with the exception of Mexico City), the Bahamas, Bermuda and the Caribbean.