| 1 | WCP | Primaris Airlines, Inc. | IATA: FE, Founded in 2002. Commenced operations on 01 June 2004. Filed for Chapter 11 Bankruptcy protection on 10 October 2008. Ceased operations in November 2008. Designator FE reinstated by IATA | USA | AVCODES |
| 2 | WCP | Aviator College of Aeronautical Science and Technology | Callsign: Whitecap, | USA | AVCODES |
| 3 | WCP | Primaris Airlines | IATA: FE | | ICAO1 |
| 4 | WCPG | WEST COAST PIANO MOVING & STORAGE L | | | SCAC4 |
| 5 | WCPM | WESTERN CENTRAL PETROLEUM INC | | | SCAC4 |
| 6 | WCPX | Walker Consolidated Petroleum Co. | 7/1923 | | NAKINA |
| 7 | WCPX | Wayne Chemical Products Co., Division of Wayne Soap Co. | 4/1947-1/1950 | | NAKINA |
| 8 | WCPX | *WALKER CONSOLIDATED PETROLEUM CO. | | | PWRC |
| 9 | WCPX | *WAYNE CHEMICAL PRODUCTS CO., DIV. WAYNE SOAP CO. | | | PWRC |
