MIAMI — American Airlines (AA) is currently retrofitting the passenger cabins of its Airbus A319s and Boeing 737-800s, in order to standardize the features, amenities and company branding.

According to the airline, the Tech Ops at Tulsa and Dallas DWH site retrofitted 31 737-800s to incorporate a total of 10 additional seats for a total of 160. Now all 274 737s will have the same cabin layout.

Also, 93 Airbus A319s inherited from US Airways were also revamped, by adding four additional seats and taking the total seat count number from 124 to 128, besides receiving in-seat power equipment and the New American Airlines branding.

Last month, American Airlines announced the plans to retire all of its Airbus A330-300s, Embraer E190s and some of its Boeing 767-300ERs. The widebodies are being replaced by Boeing 787-8 and 787-9 Dreamliners, as well as the Airbus A350, which is expected to join the fleet next year.

All AA / US wide-body planes have already received the “new American” livery, as well as almost all the Airbus A320 family aircraft. The last of the US Airways mainline aircraft—an A321—will be painted in the coming weeks, while the classic silverbird AA livery will remain around until the end of 2017, once the last 737-800 to wear the scheme receives a new paint job.