| 10001 | PTUT | PERRY & TURNER TRUCKING CO INC | | | SCAC3 |
| 10002 | PTUU | P T U TRANSLEAN SP ZOO | | | SCAC4 |
| 10003 | PTUV | PETRA TRANSPORTATION COMPANY | | | SCAC4 |
| 10004 | PTV | Puntavia Air Services | Callsign: Puntavia, | DJI | AVCODES |
| 10005 | PTV | Puntavia Air Services | | | ICAO1 |
| 10006 | PTVB | PEORIA TRAVEL BUREAU INC | | | SCAC3 |
| 10007 | PTVC | PLATINUM TRAVEL CLUB | | | SCAC3 |
| 10008 | PTVE | PRATTS TRUCK SERVICE | | | SCAC3 |
| 10009 | PTVI | PICOSTAR SERVICES INC | | | SCAC3 |
| 10010 | PTVI | PALM TRANSPORTATION SERVICES | | | SCAC4 |
| 10011 | PTVK | PASSION TRANSPORTATION INC | | | SCAC4 |
| 10012 | PTVL | PTL | | | SCAC4 |
| 10013 | PTVP | PAUL TRANSPORT | | | SCAC4 |
| 10014 | PTVR | PIONEER TRANSPORTATION SERVICES | | | SCAC3 |
| 10015 | PTVS | PREMIER TRANSPORTATION SERVICES INC | | | SCAC3 |
| 10016 | PTVS | POWER TRANSPORT SERVICES INC | | | SCAC4 |
| 10017 | PTVT | PIONEER TRAVEL & TOUR INC | | | SCAC3 |
| 10018 | PTVU | Piston Tank Corporation | | | RSRV |
| 10019 | PTWA | PORTWAY TRANSPORTATION CORP | | | SCAC3 |
| 10020 | PTWB | PANTHER EXPEDITED SERVICES INC (BRO | | | SCAC4 |
| 10021 | PTWC | PIONEER TIRE & WHEEL CORPORATION | | | SCAC4 |
| 10022 | PTWG | PALISADES TOWING CORP | | | SCAC3 |
| 10023 | PTWH | PATTERSON WAREHOUSES INC | | | SCAC3 |
| 10024 | PTWH | PATTERSON WAREHOUSES INC | | | SCAC4 |
| 10025 | PTWL | PAULS TOWING LTD | | | SCAC3 |
| 10026 | PTWL | POINT TWO (2) POINT LOGISTICS INC | | | SCAC4 |
| 10027 | PTWM | PATETOWN MILLING CO INC | | | SCAC3 |
| 10028 | PTWN | P & L TOWING AND TRANSPORTATION INC | | | SCAC4 |
| 10029 | PTWR | PITTMAN-WITHERINGTON OIL CO INC | | | SCAC4 |
| 10030 | PTWS | PASADENA TOWING SERVICE INC | | | SCAC3 |
| 10031 | PTWS | P TWO P (P2P) TRANSPORT SERVICE INC | | | SCAC4 |
| 10032 | PTWT | Panther II Expedited Services, Inc. | | | SCAC2 |
| 10033 | PTWT | PANTHER TWO (PANTHER II) TRANSPORTA | | | SCAC3 |
| 10034 | PTWT | PANTHER EXPEDITED SERVICES INC | | | SCAC4 |
| 10035 | PTX | Aereo Postal de Mexico, S.A. de C.V. | Callsign: Postalmex, | MEX | AVCODES |
| 10036 | PTX | Private X-press | Callsign: Privatex, | CH | AVCODES |
| 10037 | PTX | General American Transportation Corp. | 1/1946-7/1954; eliminated 4/1957 | | NAKINA |
| 10038 | PTX | Pennsylvania-Conley Tank Line, a Division of General American Transportation Corp. | 7/1937-1/1945 | | NAKINA |
| 10039 | PTX | Pennsylvania Tank Line (Pennsylvania-Conley Tank Line, a Division of General American Transportation Corp.) | 4/1938 | | NAKINA |
| 10040 | PTX | Pennsylvania Tank Line (Pennsylvania-Conley Tank Car Co.) | 7/1935 | | NAKINA |
| 10041 | PTX | Pennsylvania Tank Line (Pennsylvania-Conley Tank Line) | 7/1932 | | NAKINA |
| 10042 | PTX | The Pennsylvania Tank Car Co. (Pennsylvania Tank Line) | 8/1920-7/1923 | | NAKINA |
| 10043 | PTX | Pennsylvania Tank Line (Pennsylvania-Conley Tank Line, a Division of General American Transportation Corp.) | Apr-38 | | NRHS |
| 10044 | PTX | Pennsylvania-Conley Tank Line, a Division of General American Transportation Corp. | Apr-38 | | NRHS |
| 10045 | PTX | General American Transportation Corp. | 1/52; eliminated 4/57 | | NRHS |
| 10046 | PTX | GENERAL AMERICAN TRANSPORTATION CORP. [PENNSYLVANIA-CONLEY TANK LINE; PENNSYLVANIA TANK CAR CO.] | | | PWRC |
| 10047 | PTXB | PROTEXA BURLINGTON INTERNATIONAL | | | SCAC3 |
| 10048 | PTXB | PINNACLE TRANSPORTATION LLC | | | SCAC4 |
| 10049 | PTXD | PHILTEX LTD | | | SCAC4 |
| 10050 | PTXE | PRESTON TRANSPORT INC | | | SCAC4 |
| 10051 | PTXF | PEACE TRANSPORT LLC | | | SCAC4 |
| 10052 | PTXG | PITA EXPRESS | | | SCAC4 |
| 10053 | PTXH | POLER TRANSPORT INC | | | SCAC4 |
| 10054 | PTXI | PTX INC | | | SCAC3 |
| 10055 | PTXI | PACIFIC TRANS XPRESS INC | | | SCAC4 |
| 10056 | PTXJ | PENINSULA TRANSPORTATION SERVICES | | | SCAC4 |
| 10057 | PTXK | PEARL TRANSPORT LLC | | | SCAC4 |
| 10058 | PTXL | PERFORMANCE TANK LINES INC | | | SCAC3 |
| 10059 | PTXL | PETES EXPRESS LLC | | | SCAC4 |
| 10060 | PTXM | PITTS TRANSPORTATION INC | | | SCAC4 |
| 10061 | PTXN | PROA TRANSFER | | | SCAC4 |
| 10062 | PTXP | PTX SERVICES LLC | | | SCAC4 |
| 10063 | PTXQ | P & T TRANSPORT | | | SCAC4 |
| 10064 | PTXR | PRIME TIME EXPRESS INC | | | SCAC3 |
| 10065 | PTXS | PETROLEUM EXPRESS INC | | | SCAC3 |
| 10066 | PTXS | PTR EXPRESS S DE RL DE | | | SCAC4 |
| 10067 | PTXT | PATRIOT TRANSIT LLC | | | SCAC4 |
| 10068 | PTXV | PERSONAL TOUCH TAXI SERVICES, A | | | SCAC3 |
| 10069 | PTXW | POLAR TRANSPORT LLC | | | SCAC4 |
| 10070 | PTXX | PTS Inc. | added 1/1993; 1/1994; eliminated 1/1999; 7/2000-7/2005 (not listed) | | NAKINA |
| 10071 | PTXX | PTS Inc. | added 1/93; 1/94; eliminated 1/99; 7/2000 | | NRHS |
| 10072 | PTXX | PTS, INCORPORATED | | | PWRC |
| 10073 | PTXX | PTS Inc. | | | RSRV |
| 10074 | PTXX | PTS, INCORPORATED | | | SCAC4 |
| 10075 | PTXY | PS TRANSPORT INC | | | SCAC4 |
| 10076 | PTY | Petty Transport LLC | Callsign: Petty, | USA | AVCODES |
| 10077 | PTY | Petty Transport | | | ICAO1 |
| 10078 | PTYG | POSTERITY LOGISTICS | | | SCAC4 |
| 10079 | PTYI | PARAMOUNT TRANSPORTATION SYSTEMS IN | | | SCAC4 |
| 10080 | PTYK | PRIORITY TRUCKING LLC | | | SCAC4 |
| 10081 | PTYM | PATHWAY TRANSPORTATION LLC | | | SCAC4 |
| 10082 | PTYN | PRIORITY TRANSPORTATION INC | | | SCAC4 |
| 10083 | PTYP | PRIORITY TRANSPORT INC | | | SCAC4 |
| 10084 | PTYR | PETTYS TRUCKING | | | SCAC3 |
| 10085 | PTYR | PEELESS TYRE CO | | | SCAC4 |
| 10086 | PTYS | PROFESSIONAL TARIFF SERVICE | | | SCAC3 |
| 10087 | PTYS | PTY TRUCKING INC | | | SCAC4 |
| 10088 | PTYT | PRIORITY TRANSFER INC | | | SCAC3 |
| 10089 | PTYU | ACETI OXIGENO SA | | | SCAC4 |
| 10090 | PTZ | North-West Air Forest Fire Center | Callsign: Lesavia, | RUS | AVCODES |
| 10091 | PTZC | PINNACLE TRANSPORTATION SERVICES IN | | | SCAC3 |
| 10092 | PTZC | PINNACLE TRANSPORTATION & LOGISTICS | | | SCAC4 |
| 10093 | PTZE | PITZER TRANSFER & STORAGE CORP | | | SCAC3 |
| 10094 | PTZF | PEETZ FARMERS COOPERATIVE COMPANY | | | SCAC4 |
| 10095 | PTZJ | PRINTZ, JOHN | | | SCAC4 |
| 10096 | PTZL | PAUL TRUCKING LINES INC | | | SCAC4 |
| 10097 | PTZN | PTI LOGISTICS INC | | | SCAC4 |
| 10098 | PTZS | PACESETTER TRANSPORTATION SYSTEMS I | | | SCAC3 |
| 10099 | PU | Pluna Lineas Aereas Urugauyas, S.A. | ICAO: PUA, Callsign: Pluna, IATA Prefix: 286, Founded in September 1936. Commenced operations on 19 November 1936. Ceased operations on 05 July 2012. Name changed from Primeras Lineas Uruguayas de Navegacion Aerea (PLUNA) | ROU | AVCODES |
| 10100 | PU | Primeras Lineas Uruguayas de Navegacion Aerea (PLUNA) | ICAO: PUA, Callsign: Pluna, IATA Prefix: 286, Name changed to Pluna Lineas Aereas Urugauyas S.A. | ROU | AVCODES |
