Source: American Airlines
American is introducing a premium economy product beginning with the Boeing 787-9 later this year, then the Airbus A350, both new aircraft for the airline. These seats are from B/E Aerospace as well.
Side View of American Airlines Premium Economy Seats, credit: American Airlines
Over the next few years American will retrofit existing Boeing 777-300ERs, Boeing 777-200ERs, Boeing 787-8s and Airbus A330s to include Premium Economy.
These new 787-9s and A350s with have new business class and premium economy for the first time, but American hasn’t announced the number of seats in each cabin.
Reader R. sends me an internal document revised in January, so while likely final there’s the possibility that changes have been made.
The Airbus A350 is expected to accommodate 318 passengers with 32 business class and 24 premium economy seats.
The Boeing 787-9 is expected to accommodate 277 passengers with 28 business class and 21 premium economy seats.
These breakdowns are skewed towards economy, because in contrast American’s existing Boeing 777-300ERs have over 19% business and first class seats (and no premium economy). Given the move towards more seats and fewer premium seats, I’d guess that the premium economy retrofit of that aircraft may come at the expense of seats in higher cabins.