I am commencing challenge in a just over a week. However, the person at AA said you no longer had a variable starting time, it was just a 3 month period and you could choose to be in it or not. I am positive she was wrong but it didn't matter for my purposes. FYI BNE-LAX in Full Economy or J is enough to Qualify.
This is the email:
Thank you for registering for an AAdvantage[SUP]®[/SUP] challenge.
To enjoy AAdvantage PLATINUM status through February 2017, please earn 10,000 elite qualifying points between now and 09/16/2015. Qualifying flights on American Airlines, American Eagle, AmericanConnection[SUP]®[/SUP], British Airways, Finnair, Iberia, Japan Airlines, Qantas, US Airways and their eligible codeshare flights count toward your challenge.
Since the number of elite qualifying points you earn is based on the fare you purchase and the miles you earn, you can view these details for each airline:
We wish you every success in attaining the elite status level you desire. Thank you for registering for an AAdvantage[SUP]®[/SUP] challenge.
To enjoy AAdvantage PLATINUM status through February 2017, please earn 10,000 elite qualifying points between now and 09/16/2015. Qualifying flights on American Airlines, American Eagle, AmericanConnection[SUP]®[/SUP], British Airways, Finnair, Iberia, Japan Airlines, Qantas, US Airways and their eligible codeshare flights count toward your challenge.
Since the number of elite qualifying points you earn is based on the fare you purchase and the miles you earn, you can view these details for each airline:
We wish you every success in attaining the elite status level you desire.
how much did you pay?