| 1 | PCO | Pacific Coastal Airlines Limited | IATA: 8P, Callsign: Pasco, | CDN | AVCODES |
| 2 | PCO | Pacific Coastal Airline | IATA: 8P | | ICAO1 |
| 3 | PCOA | PALCO AIR CARGO | | | SCAC3 |
| 4 | PCOA | PALCO AIR CARGO | | | SCAC4 |
| 5 | PCOB | PUCINO BROS | | | SCAC3 |
| 6 | PCOC | PICCOTTI CORP | | | SCAC3 |
| 7 | PCOE | PACIFIC COAST EXPRESS | | | SCAC3 |
| 8 | PCOF | PACIFIC CONTINENTAL SHIPPERS | | | SCAC4 |
| 9 | PCOH | PREMIER COACH CO INC | | | SCAC4 |
| 10 | PCOI | PASCAP CO INC | | | SCAC3 |
| 11 | PCOI | PASCAP CO INC | | | SCAC4 |
| 12 | PCOJ | PETRUCELA & COMPANY | | | SCAC4 |
| 13 | PCOK | PRESCOTT TANK LINES INC | | | SCAC4 |
| 14 | PCOM | PARCO | | | SCAC3 |
| 15 | PCOM | PARDO CORRAL, MANUEL | | | SCAC4 |
| 16 | PCON | PROMAN CONTAINERS INC. | | | SCAC3 |
| 17 | PCON | PROMAN CONTAINERS INC | | | SCAC4 |
| 18 | PCOO | PIERCE OIL COMPANY INC | | | SCAC4 |
| 19 | PCOP | PALM COAST CO-OP FARM LINES INC | | | SCAC3 |
| 20 | PCOP | PRO COOPERATIVE | | | SCAC4 |
| 21 | PCOQ | POSNER CORP | | | SCAC4 |
| 22 | PCOR | PEARCOOR EXPRESS INC | | | SCAC3 |
| 23 | PCOS | PATRIOT COURIER SERVICE, INC | | | SCAC3 |
| 24 | PCOS | PROCOAT TECHNOLOGIES INC | | | SCAC4 |
| 25 | PCOT | PACIFIC COAST TRANSPORT | | | SCAC3 |
| 26 | PCOU | PRAXAIR COSTA RICA | | | SCAC4 |
| 27 | PCOW | PULVERMACHE | | | SCAC4 |
| 28 | PCOX | Phoenix Cotton Oil Co. | 8/1920 | | NAKINA |
| 29 | PCOX | PHOENIX COTTON OIL CO. | | | PWRC |
| 30 | PCOZ | PEVIER COAL COMPANY | | | PWRC |
