Volunteer Pilots Association was created in 1990.
Volunteer Pilots Association's motto is 'People Flying People in Need'.
Allied Pilots Association was created in 1963.
Caribbean Airline Pilots Association was created in 1997.
Norwegian Airline Pilots Association was created in 1977.
Independent Pilots Association was created on 1990-01-10.
Independent Association of Continental Pilots was created in 1993.
US Airline Pilots Association was created in 2007.
Delaware Volunteer Firemen's Association was created in 1921.
British Airline Pilots' Association was created on 1937-06-27.
Independent Pilots Association - UK Pilot Union was created on 1992-01-01.
"pilots" would be the correct way to spell it. Pilots is used as a plural. It's not possessive (Like, for example, "...a pilot's logbook")
US airline pilots have formed into a couple of unions. The largest is ALPA - Air Line Pilots Association.