| 1 | PLE | Pas Airlines | Callsign: Pasair, | YV | AVCODES |
| 2 | PLE | Youngstown & Southern Ry. Co. | added 4/1993; eliminated 10/1993; 1/1994-7/2005 (not listed) | | NAKINA |
| 3 | PLE | The Pittsburgh & Lake Erie R.R. Co. | 1/1975-1/1980; eliminated 1/1993 | | NAKINA |
| 4 | PLE | The Pittsburgh & Lake Erie R.R. Co. | 1/75-1/80; eliminated 1/93 | | NRHS |
| 5 | PLE | Youngstown & Southern Ry. Co. | added 4/93; eliminated 10/93; 1/94-7/2000 | | NRHS |
| 6 | PLE | *CSX TRANSPORTATION [CONRAIL; PENN CENTRAL; NEW YORK CENTRAL; PITTSBURGH & LAKE ERIE RAILROAD] | | | PWRC |
| 7 | PLE | *(PLW) PL&W RAILROAD CO., INC. | | | PWRC |
| 8 | PLE | +YOUNGSTOWN & SOUTHERN RAILWAY | | | PWRC |
| 9 | PLE | Pittsburgh and Lake Erie Railroad (CSX Transportation) | | | RSRV |
| 10 | PLE | The Pittsburgh & Lake Erie R.R. Co. | | USA | TRAFFIC |
| 11 | PLEA | PAN-AMERICA | | | SCAC4 |
| 12 | PLED | PLEIADES SHIPPING AGENTS SA | | | SCAC3 |
| 13 | PLEG | PLEGGE TRUCK SERVICE | | | SCAC3 |
| 14 | PLEI | P & L ENTERPRISES INC | | | SCAC3 |
| 15 | PLEI | PLENIMEX S A DE C V | | | SCAC4 |
| 16 | PLEK | PETERSON, LEE TRUCKING | | | SCAC4 |
| 17 | PLEM | POWER PETROLEUM | | | SCAC4 |
| 18 | PLEO | PLETCH TRUCKING | | | SCAC3 |
| 19 | PLEP | PLAINS EXPRESS INC | | | SCAC3 |
| 20 | PLEP | POINT LOGISTICS EXPRESS | | | SCAC4 |
| 21 | PLEQ | PEERLESS TRANSPORTATION CO | | | SCAC3 |
| 22 | PLEQ | PAYSEN LIVESTOCK EQUIPMENT INC | | | SCAC4 |
| 23 | PLER | PLYLER, MICKEY TRUCKING INC | | | SCAC4 |
| 24 | PLES | P & L EXPRESS LINES | | | SCAC4 |
| 25 | PLET | PALMER TRANSPORT CORP | | | SCAC4 |
| 26 | PLEV | POINT LOGISTICS EXPRESS (VAN DIVISI | | | SCAC4 |
| 27 | PLEVT | Troleybus Transport Pleven | City: Pleven | BG | TRAFFIC |
| 28 | PLEW | PLEIONE SHIPPING COMPANY LIMITED | | | SCAC4 |
| 29 | PLEX | The CIT Group/Capital Finance, Inc. | added 1/2006 | | NAKINA |
| 30 | PLEX | PLM International, Inc. | added 7/1990; 1/1994-7/2005; eliminated 1/2006 | | NAKINA |
| 31 | PLEX | PLM Remarketing Division of PLM, Inc. | added 10/1981; eliminated 7/1990 | | NAKINA |
| 32 | PLEX | PLEX Division of PLM, Inc. | added 10/1979; 1/1980; eliminated 10/1981 | | NAKINA |
| 33 | PLEX | PLEX Division of PLM, Inc. | 1/80; eliminated 10/81 | | NRHS |
| 34 | PLEX | PLM Remarketing Division of PLM, Inc. | added 10/81; eliminated 7/90 | | NRHS |
| 35 | PLEX | PLM International, Inc. | added 7/90; 1/94-7/2000 | | NRHS |
| 36 | PLEX | THE CIT GROUP/CAPITAL FINANCE INC. [PLM, INC., PLEX DIV.] | | | PWRC |
| 37 | PLEX | CIT Group | | | RSRV |
| 38 | PLEX | CIT GROUP/CAPITAL FINANCE INC, THE | | | SCAC4 |
