| 1 | PSC | Pascan Aviation Inc. | IATA: P6, Callsign: Pascan, Name changed to 9736140 Canada Inc. t/a Pascan | CDN | AVCODES |
| 2 | PSC | 9736140 Canada Inc t/a Pascan | IATA: P6, Callsign: Pascan, Name changed from Pascan Aviation Inc. | CDN | AVCODES |
| 3 | PSC | Pascan Aviation | | | ICAO1 |
| 4 | PSC | PYCO INDUSTRIES INC. | | | PWRC |
| 5 | PSC | PYCO INDUSTRIES INC | | | SCAC4 |
| 6 | PSCA | PANTHEON SHIPPING COMPANY S A | | | SCAC3 |
| 7 | PSCA | PANTHEON SHIPPING COMPANY S A | | | SCAC4 |
| 8 | PSCB | PERMAN STOLER CUSTOMHOUSE BROKER | | | SCAC3 |
| 9 | PSCB | PETROLEUM SERVICES COMPANY LLC | | | SCAC4 |
| 10 | PSCC | Pennsylvania & Southern Ry. LLC | 7/2005 | | NAKINA |
| 11 | PSCC | PENNSYLVANIA & SOUTHERN RWY. LLC | | | PWRC |
| 12 | PSCC | PERSONAL COURIER CORP | | | SCAC3 |
| 13 | PSCC | PENNSYLVANIA & SOUTHERN RAILWAY LLC | | | SCAC4 |
| 14 | PSCF | PACKARD SPECIALIZED CARRIERS INC | | | SCAC4 |
| 15 | PSCG | PRESIDENT STORAGE CO INC | | | SCAC3 |
| 16 | PSCH | PACIFIC STATE CHARTER | | | SCAC3 |
| 17 | PSCH | PLASTICRAFT SIGNS AND GRAPHICS | | | SCAC4 |
| 18 | PSCI | PUBLIC SERVICE COMPANY OF INDIANA | | | PWRC |
| 19 | PSCI | PRESTIGIOUS CARRIER INC | | | SCAC3 |
| 20 | PSCK | PESCHKE TRUCKING | | | SCAC4 |
| 21 | PSCL | PUGET SOUND COACH LINES | | | SCAC3 |
| 22 | PSCL | PROGRESSIVE SWEEPING CONTRACTORS IN | | | SCAC4 |
| 23 | PSCM | PRESCOTT MOTORS INC | | | SCAC3 |
| 24 | PSCN | PERAMOS SHIPPING COMPANY LIMITED, P | | | SCAC3 |
| 25 | PSCN | PARISO, CARMEN M INC | | | SCAC4 |
| 26 | PSCP | PALLET SUPPLY COMPANY INC | | | SCAC3 |
| 27 | PSCQ | PEERLESS STORAGE CO, THE | | | SCAC3 |
| 28 | PSCR | PASSAIC TERMINAL & TRANSPORTATION C | | | SCAC3 |
| 29 | PSCS | PINE SHIPPING CO., INC | | | SCAC3 |
| 30 | PSCT | PRIMEAU, SCOTT | | | SCAC4 |
| 31 | PSCT | Public Service Coordinated Transportation Company | | US-NJ | TRAFFIC |
| 32 | PSCU | CARU CONTAINERS BV | | NL | BIC |
| 33 | PSCU | PIET SCHOUTEN CONTAINERHANDEL BV | | | SCAC3 |
| 34 | PSCU | SCHOUTEN CONTAINER SERVICES (SCS) | | | SCAC4 |
| 35 | PSCV | PRESTO COURIER SERVICE | | | SCAC3 |
| 36 | PSCX | Xcel Energy | added 1/2006; eliminated 1/2008 | | NAKINA |
| 37 | PSCX | Public Service Co. of Colorado | added 4/1973; 1/1975-7/2000; eliminated 10/2002; 7/2005 (not listed) | | NAKINA |
| 38 | PSCX | Prolerized Steel Corp. | added 7/1960; 4/1961-10/1966; eliminated 10/1969 | | NAKINA |
| 39 | PSCX | Prolerized Steel Corp. | added 7/60; 4/61-10/66; eliminated 10/69 | | NRHS |
| 40 | PSCX | Public Service Co. of Colorado | added 4/73; 1/75-1/80 | | NRHS |
| 41 | PSCX | Public Services Co. of Colorado | 1/94-7/2000 | | NRHS |
| 42 | PSCX | *PROLERIZED STEEL CORP. | | | PWRC |
| 43 | PSCX | +XCEL ENERGY [PUBLIC SERVICE COMPANY OF COLORADO] | | | PWRC |
| 44 | PSCX | Public Service of Colorado | | | RSRV |
| 45 | PSCX | PROLERIZED STEEL CORP | | | SCAC3 |
| 46 | PSCX | XCEL ENERGY | | | SCAC4 |
| 47 | PSCY | PEARLNYPMH SHIPPING LTD. | | | SCAC3 |
| 48 | PSCZ | XCEL ENERGY [PUBLIC SERVICE COMPANY OF COLORADO] | | | PWRC |
