Beginning in January 2006, all America West flights were branded as US Airways, along with most signage at airports and other printed material, though many flights were described as "operated by America West." Apart from two heritage aircraft, the only remaining America West branding on aircraft can be found on some seat covers and bulkheads. The merged airline used America West's "CACTUS" callsign and ICAO code "AWE", but retained the US Airways name. In February 2013, American Airlines and US Airways announced plans to merge, creating the largest airline in the world.