| 9701 | PTNH | PILOT TRANSPORT | | | SCAC3 |
| 9702 | PTNH | PILOT TRANSPORT | | | SCAC4 |
| 9703 | PTNI | PETRON INC | | | SCAC3 |
| 9704 | PTNJ | PLATNIUM TRANPORTATION NJ INC | | | SCAC4 |
| 9705 | PTNK | PURYEAR TANK LINES INC | | | SCAC4 |
| 9706 | PTNL | PETRO TANK LINES INC | | | SCAC3 |
| 9707 | PTNL | PETRO TANK LINES INC | | | SCAC4 |
| 9708 | PTNN | PTNR CORPORATION | | | SCAC3 |
| 9709 | PTNO | PET TRANSPORT OF NEW YORK | | | SCAC3 |
| 9710 | PTNP | PINNACLE TRANSPORTATION SERVICE, INC | | | SCAC3 |
| 9711 | PTNP | PACOS TRANSPORT | | | SCAC4 |
| 9712 | PTNQ | PETER TRUCKING | | | SCAC3 |
| 9713 | PTNR | PTN | | | SCAC4 |
| 9714 | PTNS | PATRON CARRIERS | | | SCAC3 |
| 9715 | PTNS | PROGRESSIVE TRANSPORTATION SOLUTION | | | SCAC4 |
| 9716 | PTNT | PATON-TULLY TRANSPORTATION COMPANY, | | | SCAC3 |
| 9717 | PTNT | PT TRANSPORT LLC | | | SCAC4 |
| 9718 | PTNV | PATRIOT TRANSPORT | | | SCAC3 |
| 9719 | PTNW | PREMIER TRANSPORTATION & WAREHOUSIN | | | SCAC3 |
| 9720 | PTO | North West Geomatics Ltd. | Callsign: Photo, | CDN | AVCODES |
| 9721 | PTO | Pilot Training Network GmbH | Callsign: Rookie, | D | AVCODES |
| 9722 | PTO | North West Geomatics | | | ICAO1 |
| 9723 | PTO | PORTLAND TERMINAL (OREGON) | | | PWRC |
| 9724 | PTOA | PENISNULA TRANSPORT INC | | | SCAC3 |
| 9725 | PTOB | PACIFIC TOWBOAT & SALVAGE CO | | | SCAC3 |
| 9726 | PTOC | PATON RACING | | | SCAC4 |
| 9727 | PTOD | PATTERSON OIL CO INC | | | SCAC4 |
| 9728 | PTOE | PETRO ENERGY TRANSPORT COMPANY INC | | | SCAC3 |
| 9729 | PTOG | PARROTT TRANSPORTATION INC | | | SCAC3 |
| 9730 | PTOG | PICTURE THIS ON GRANITE | | | SCAC4 |
| 9731 | PTOH | PORT OF HOMER | | | SCAC3 |
| 9732 | PTOH | PATRIOT TRUCKING & OIL LLC | | | SCAC4 |
| 9733 | PTOI | PAL TRANSPORT INC | | | SCAC3 |
| 9734 | PTOI | PETILLO INC | | | SCAC4 |
| 9735 | PTOJ | PRIMO TRANSPORT INC | | | SCAC3 |
| 9736 | PTOK | PILATO TRUCKING | | | SCAC3 |
| 9737 | PTOK | PIERCE, TOM TRUCKING | | | SCAC4 |
| 9738 | PTOL | PAPER TRANSPORT LTD | | | SCAC3 |
| 9739 | PTOL | PAPER TRANSPORT LTD | | | SCAC4 |
| 9740 | PTOM | PATTONS MOVERS INC | | | SCAC3 |
| 9741 | PTON | PETRINO, NORMAN | | | SCAC4 |
| 9742 | PTOO | PIERCE TRANSPORTATION | | | SCAC3 |
| 9743 | PTOP | PETRO OIL CO INC | | | SCAC4 |
| 9744 | PTOQ | PITTCO DELIVERY | | | SCAC3 |
| 9745 | PTOQ | POOK TOQUE | | | SCAC4 |
| 9746 | PTOS | POTOSI EXPRESS | | | SCAC3 |
| 9747 | PTOT | PLATINUM TOOL TECHNOLOGIES | | | SCAC4 |
| 9748 | PTOU | PETRA OIL DMCC | | UAE | BIC |
| 9749 | PTOW | PREFERRED TOWING | | | SCAC4 |
| 9750 | PTOX | PTO Rail, Inc. | 7/2005 (not listed) | | NAKINA |
| 9751 | PTOX | PTO, Inc. | added 4/1986; 1/1994-7/2000; eliminated 7/2004 | | NAKINA |
| 9752 | PTOX | Pittsburgh-Texas Oil and Gas Co. | 8/1920 | | NAKINA |
| 9753 | PTOX | PTO, Inc. | added 4/86; 1/94-7/2000 | | NRHS |
| 9754 | PTOX | *PITTSBURGH-TEXAS OIL & GAS CO. | | | PWRC |
| 9755 | PTOX | +PTO RAIL, INC. [PTO INCORPORATED] | | | PWRC |
| 9756 | PTOX | PTO Rail | | | RSRV |
| 9757 | PTOX | PTO RAIL LLC | | | SCAC4 |
| 9758 | PTOY | POTTER OIL CO INC | | | SCAC4 |
| 9759 | PTOZ | PORT OF TACOMA | | | PWRC |
| 9760 | PTP | Package Express | Callsign: Trans Pacific, | PAL | AVCODES |
| 9761 | PTP | Palau Trans Pacific Airline | IATA: GP | | ICAO1 |
| 9762 | PTPB | PRODUCTIVE TRANSPORTATION SERVICES | | | SCAC3 |
| 9763 | PTPB | PRODUCTIVE TRANSPORTATION SERVICES | | | SCAC4 |
| 9764 | PTPC | PREMIUM TRANSPORTATION CO | | | SCAC3 |
| 9765 | PTPC | PRESSEAULT, PAUL TRUCKING | | | SCAC4 |
| 9766 | PTPD | PETERSON PRODUCE INC | | | SCAC4 |
| 9767 | PTPE | PATRIOT TRANSPORTATION INC | | | SCAC3 |
| 9768 | PTPF | PETROLEUM TRANSPORT LINES INC | | | SCAC3 |
| 9769 | PTPF | PETROLEUM TRANSPORT LINES INC | | | SCAC4 |
| 9770 | PTPG | PINTO TRANSFER & PACKING CORP | | | SCAC4 |
| 9771 | PTPH | POINT TO POINT INC | | | SCAC3 |
| 9772 | PTPI | PARIS TRANSPORT, INC | | | SCAC3 |
| 9773 | PTPI | PARIS TRANSPORT INC | | | SCAC4 |
| 9774 | PTPJ | POINT TO POINT INC | | | SCAC3 |
| 9775 | PTPK | P T L A TRANSPORTATION INC | | | SCAC3 |
| 9776 | PTPK | PERKINS T P TRAILERS | | | SCAC4 |
| 9777 | PTPL | PRESTON TRANSPORT LTD | | | SCAC3 |
| 9778 | PTPL | PRESTON TRANSPORT LTD | | | SCAC4 |
| 9779 | PTPM | PATSY TRANSPORTATION INC | | | SCAC3 |
| 9780 | PTPO | PETROLEUM TRANSPORT INC | | | SCAC3 |
| 9781 | PTPO | PETROLEUM TRANSPORT INC | | | SCAC4 |
| 9782 | PTPP | PONDEROSA TRANSPORTATION (DIV OF PO | | | SCAC3 |
| 9783 | PTPQ | PRO TRANSPORTATION SERVICES INC | | | SCAC4 |
| 9784 | PTPR | PIONEER TRANSPORTATION | | | SCAC3 |
| 9785 | PTPS | PAPER TRANSPORTATION SPECIALISTS IN | | | SCAC3 |
| 9786 | PTPT | PARK TRANSPORTATION CO | | | SCAC3 |
| 9787 | PTPU | PETROLAND | | | SCAC3 |
| 9788 | PTPV | PORT TO PORT INC | | | SCAC3 |
| 9789 | PTPV | PORT TO PORT INC | | | SCAC4 |
| 9790 | PTPW | PIONEER TRANSPORT, INC | | | SCAC3 |
| 9791 | PTPW | PIONEER TRANSPORT INC | | | SCAC4 |
| 9792 | PTPY | PORTS PETROLEUM CO INC | | | SCAC4 |
| 9793 | PTQ | Port Townsend Airways | Callsign: Townsend, | AUS | AVCODES |
| 9794 | PTQ | Port Townsend Airways | | | ICAO1 |
| 9795 | PTQA | PEOPLES TRANSIT | | | SCAC4 |
| 9796 | PTQB | POTTLES TRANSPORTATION LLC (BROKERA | | | SCAC4 |
| 9797 | PTQC | PARKINS TRUCKING LLC | | | SCAC4 |
| 9798 | PTQD | PEARL TRANSPORT INC | | | SCAC4 |
| 9799 | PTQE | PRESTAN TRANSPORT INC | | | SCAC4 |
| 9800 | PTQF | PARKER TRUCKING SERVICES INC | | | SCAC4 |
