| 1 | PTL | Providence Airline | Callsign: Plantation, | USA | AVCODES |
| 2 | PTL | Providence Airline | | | ICAO1 |
| 3 | PTLA | PRIMA TRUCK LINES CORPORATION | | | SCAC4 |
| 4 | PTLB | POOL TRUCKING LINES | | | SCAC3 |
| 5 | PTLB | PACIFIC TRAIL LOGISTICS LLC | | | SCAC4 |
| 6 | PTLC | PITTSBURGH LOGISTICS SYSTEMS INC | | | SCAC4 |
| 7 | PTLE | PARTEN TRUCK LINES INC | | | SCAC4 |
| 8 | PTLF | PETROLEUM TRUCK LINES INC | | | SCAC3 |
| 9 | PTLF | POWER TRANSPORT LOGISTICS & SERVICE | | | SCAC4 |
| 10 | PTLG | PTS LOGISTICS INC | | | SCAC4 |
| 11 | PTLH | POTTERS LONG HAUL | | | SCAC4 |
| 12 | PTLI | PACKARD TRUCK LINES INC | | | SCAC3 |
| 13 | PTLI | PACKARD TRUCK LINES INC | | | SCAC4 |
| 14 | PTLK | P T L TRUCKING | | | SCAC3 |
| 15 | PTLK | PORTILLO TRUCKING CO | | | SCAC4 |
| 16 | PTLL | PREMIUM TANK LINES INC | | | SCAC3 |
| 17 | PTLN | PATTERSON TRUCK LINE, INC | | | SCAC3 |
| 18 | PTLN | PALATEC TRUCKING LLC | | | SCAC4 |
| 19 | PTLO | PETALUMA VAN & STORAGE | | | SCAC3 |
| 20 | PTLP | PRO TRUCK LINES, INC | | | SCAC3 |
| 21 | PTLP | PALM TREE LOGISTICS INC | | | SCAC4 |
| 22 | PTLQ | PIERCE TRUCK LINE | | | SCAC3 |
| 23 | PTLR | PAUTLER OIL SERVICE INC | | | SCAC4 |
| 24 | PTLRTJ | PT LRT Jakarta | | RI | TRAFFIC |
| 25 | PTLS | PETTIS LOGISTICS LLC | | | SCAC4 |
| 26 | PTLT | PREFERRED TRANSLOCATION SYSTEMS INC | | | SCAC3 |
| 27 | PTLU | PLC LTD | | RUS | BIC |
| 28 | PTLU | PACIFIC ISLANDS TRANSPORT LINE | | | SCAC3 |
| 29 | PTLV | PERIMETER TRANSPORTATION LTD | | | SCAC3 |
| 30 | PTLV | PROMOTIVE TRANSPORT LTD | | | SCAC4 |
| 31 | PTLW | PTL INTERMODAL INC | | | SCAC3 |
| 32 | PTLX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 33 | PTLX | General Electric Railcar Services Corp. | added 10/1992; 1/1994; eliminated 1/2000 | | NAKINA |
| 34 | PTLX | Itel Rail Corp. | added 1/1990; eliminated 10/1992 | | NAKINA |
| 35 | PTLX | Pullman Leasing Co. | added 4/1981; eliminated 1/1990 | | NAKINA |
| 36 | PTLX | Pullman Leasing Co., a Subsidiary of Pullman Inc. | added 1/1976; 1/1980; eliminated 4/1981 | | NAKINA |
| 37 | PTLX | Pullman Transport Leasing Co., a Subsidiary of Pullman Inc. | added 10/1970; 1/1975; eliminated 1/1976 | | NAKINA |
| 38 | PTLX | John H. Grace Co. | eliminated 4/1957 | | NAKINA |
| 39 | PTLX | Duredo Co., care of John H. Grace Co. | 4/1947-7/1954 | | NAKINA |
| 40 | PTLX | Duredo Co., care of National Refining Co. | 1/1946 | | NAKINA |
| 41 | PTLX | The National Refining Co. (formerly Peerless Transit Line) | 7/1935-1/1945 | | NAKINA |
| 42 | PTLX | Canadian Oil Companies, Ltd. (formerly Peerless Transit Line) | 7/1935 | | NAKINA |
| 43 | PTLX | Peerless Transit Line | 8/1920-7/1932 | | NAKINA |
| 44 | PTLX | The National Refining Co. (formerly Peerless Transit Line) | Apr-38 | | NRHS |
| 45 | PTLX | Duredo Co., care of John H. Grace Co. | Jan-52 | | NRHS |
| 46 | PTLX | John H. Grace Co. | eliminated 4/57 | | NRHS |
| 47 | PTLX | Pullman Transport Leasing Co., a Subsidiary of Pullman Inc. | added 10/70; 1/75 | | NRHS |
| 48 | PTLX | Pullman Leasing Co., a Subsidiary of Pullman Inc. | 1/80; eliminated 4/81 | | NRHS |
| 49 | PTLX | Pullman Leasing Co. | added 4/81; eliminated 1/90 | | NRHS |
| 50 | PTLX | Itel Rail Corp. | added 1/90; eliminated 10/92 | | NRHS |
| 51 | PTLX | General Electric Railcar Services Corp. | added 10/92; 1/94; eliminated 1/2000 | | NRHS |
| 52 | PTLX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 53 | PTLX | *JOHN H. GRACE CO. [DUREDO CO.; NATIONAL REFINING CO.; PEERLESS TRANSIT LINE] | | | PWRC |
| 54 | PTLX | +(NATX) GENERAL ELECTRIC RAIL SERVICES CORP. [ITEL RAIL CORP.; PULLMAN LEASING CO.] | | | PWRC |
| 55 | PTLX | Pullman Transport Leasing (GE Rail Services) | | | RSRV |
| 56 | PTLX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 57 | PTLX | Pullman Transport Leasing Co. | | USA | TRAFFIC |
| 58 | PTLY | PETERS TRUCK LINES | | | SCAC3 |
