the end, American let their employees decide the new livery's fate. On an internal website for employees, American posted two options, one the new livery and one a modified version of the old livery. All of the American Airlines Group employees (including US Airways and other affiliates) were able to vote. American ultimately decided to keep the new look. Parker announced that American would keep a US Airways and America West heritage aircraft in the fleet, with plans to add a heritage TWA aircraft and a heritage American plane with the old livery. As of September 2019, American has heritage aircraft for Piedmont, PSA, America West, US Airways, Reno Air, TWA, and AirCal in their fleet. They also have two AA branded heritage 737-800 aircraft, an AstroJet N905NN, and the polished aluminum livery used from 1967 to 2013, N921NN. Worker relations The main representatives of key groups of employees are: The Allied Pilots Association is an in-house union which represents the nearly 15,000 American Airlines pilots; it was created in 1963 after the pilots left the Air Line Pilots Association (ALPA). However the majority of American Eagle pilots are ALPA members. The Association of Professional Flight Attendants represents American Airlines flight attendants, including former USAirways flight attendants. Flight attendants at wholly owned regional carriers (Envoy, Piedmont, and PSA) are all represented by Association of Flight Attendants – Communications Workers of America (AFA-CWA). US Airways flight attendants were active members of AFA-CWA before the merger, and they are honorary lifetime members. AFA-CWA is the largest flight attendant union in the industry. The Transport Workers Union-International Association of Machinists alliance (TWU-IAM) represents the majority of American Airlines employed fleet service agents, mechanics, and other ground workers. American's customer service and gate employees belong to the Communications Workers of America/International Brotherhood of Teamsters Passenger Service Association. Concerns and conflicts Environmental violations Between October 1993 to July 1998, American Airlines was repeatedly cited for using high-sulfur fuel in motor vehicles at 10 major airports around the country, a violation of the Clean Air Act. Lifetime AAirpass Since 1981, as a means of creating revenue in a period of loss-making, American Airlines had offered a lifetime pass of unlimited travel, for the initial cost of $250,000. This entitled the pass holder to fly anywhere in the world. Twenty-eight were sold. However, after some time, the airline realized they were making losses on the tickets, with