| 5001 | PLAJ | PENN, LAWRENCE A JR TRUCKING | | | SCAC3 |
| 5002 | PLAK | PEMBINA COONY LTD | | | SCAC4 |
| 5003 | PLAL | PLATTE TRUCK LINE | | | SCAC3 |
| 5004 | PLAL | PEOPLE & LOGISTICS AMERICA INC | | | SCAC4 |
| 5005 | PLAM | PLAMONDON TRANSPORT, INC | | | SCAC3 |
| 5006 | PLAM | PLAMONDON TRANSPORT, INC | | | SCAC4 |
| 5007 | PLAN | PLANTT BROTHERS TRUCKING | | | SCAC4 |
| 5008 | PLAO | PLATO AGENCIES INC. | | | SCAC3 |
| 5009 | PLAO | P & L LOGISTICS INC | | | SCAC4 |
| 5010 | PLAP | PORTLAND PIPE LINE CORPORATION | | | SCAC3 |
| 5011 | PLAP | PORTLAND PIPE LINE CORP | | | SCAC4 |
| 5012 | PLAR | POLAR EXPRESS INC | | | SCAC3 |
| 5013 | PLAS | PLAINS TRANSPORTATION INCORPORATED | | | SCAC4 |
| 5014 | PLAS | Plasmor Ltd | | UK | VKM |
| 5015 | PLAT | PLATTER, LEE C | | | SCAC3 |
| 5016 | PLATA | P.H.U. Lokomotiv | | PL | VKM |
| 5017 | PLAU | POLAR CONTAINER SPECIAL EQUIPMENT LIMITED | | PRC | BIC |
| 5018 | PLAU | | City: Plauen | D | TRAFFIC |
| 5019 | PLAV | PLATEAU VALLEY MOTOR FREIGHT | | | SCAC3 |
| 5020 | PLAV | PINE LINE RACING | | | SCAC4 |
| 5021 | PLAW | PLATIN ARROW MARINE LTD | | | SCAC3 |
| 5022 | PLAX | PORT OF LOS ANGELES | | | PWRC |
| 5023 | PLAXTON | Plaxton | | GB | TRAFFIC |
| 5024 | PLB | Polls, Center For Parachute And Expeditionary Works | Callsign: Antex, | RUS | AVCODES |
| 5025 | PLB | Polynesian Blue | IATA: DJ | | ICAO1 |
| 5026 | PLB | PLYMOUTH & BROCKTON STREET RAILWAY | | | SCAC4 |
| 5027 | PLBC | PIONEER LOG HOMES OF BRITISH COLUMB | | | SCAC4 |
| 5028 | PLBD | PALMENTERE BROTHERS DISTRIBUTING CO | | | SCAC3 |
| 5029 | PLBD | POLAR RUBBER PRODUCTS INC | | | SCAC4 |
| 5030 | PLBE | PIONEER LOGISTICS SYSTEMS INC | | | SCAC4 |
| 5031 | PLBF | PRIME LOGISTICS INT'L INC3225 SW 12 | | | SCAC4 |
| 5032 | PLBH | PIONEER LOGISTICS SOLUTIONS LLC | | | SCAC4 |
| 5033 | PLBJ | PHARMALOGIC LTD | | | SCAC4 |
| 5034 | PLBK | PETROKIM LLC | | | SCAC4 |
| 5035 | PLBL | PALMER BARGE LINES | | | SCAC3 |
| 5036 | PLBP | PROMPT LOGISTICS | | | SCAC4 |
| 5037 | PLBQ | PEOPLE & LOGISTICS TRANSPORT INC | | | SCAC4 |
| 5038 | PLBW | PROMISED LAND LOGISTICS LLC | | | SCAC4 |
| 5039 | PLC | Police Aviation Services Ltd. | Callsign: Police, Founded on 17 September 1984. Name changed to Specialist Aviation Services Ltd. w.e.f. 01 June 2015. Police Aviation Services Ltd. | GB | AVCODES |
| 5040 | PLC | Specialist Aviation Services Ltd. | Callsign: Special, Name changed from Police Aviation Services Ltd. w.e.f. 01 June 2015. | GB | AVCODES |
| 5041 | PLC | Police Aviation Services | | | ICAO1 |
| 5042 | PLCA | PIGGY-BACK SHIPPERS ASSOCIATION | | | SCAC3 |
| 5043 | PLCA | PALM COAST | | | SCAC4 |
| 5044 | PLCB | PEARL INC | | | SCAC3 |
| 5045 | PLCC | PAULS CARTAGE INC | | | SCAC3 |
| 5046 | PLCE | PALACE TANKERS INC. | | | SCAC3 |
| 5047 | PLCF | PRIME LOGISTICS CORP | | | SCAC4 |
| 5048 | PLCH | PAYLESS CASHWAY INC | | | SCAC3 |
| 5049 | PLCI | PELLCO TRUCKING INC | | | SCAC3 |
| 5050 | PLCK | PALCO TRUCKING INC | | | SCAC3 |
| 5051 | PLCL | PALMER, C L TRUCKING INC | | | SCAC3 |
| 5052 | PLCL | P L C TRANSPORTATION LLC | | | SCAC4 |
| 5053 | PLCM | PLACE MACHINE CORP | | | SCAC3 |
| 5054 | PLCN | PELICAN TRUCK LINE INC | | | SCAC3 |
| 5055 | PLCO | PINSPOTTER LEASING CORP | | | SCAC3 |
| 5056 | PLCO | POIRIER, LUC TRANSPORT ENR | | | SCAC4 |
| 5057 | PLCP | PILCHS PETROLEUM CORPORATION | | | SCAC3 |
| 5058 | PLCQ | PREFERRED LOAD CARRIERS LC | | | SCAC4 |
| 5059 | PLCR | PLACER TRUCKING | | | SCAC3 |
| 5060 | PLCR | PLANE CARGO INC | | | SCAC4 |
| 5061 | PLCS | PALLET CONSULTANTS CORP | | | SCAC4 |
| 5062 | PLCU | PLCS INTERNATIONAL | | NL | BIC |
| 5063 | PLCV | PANTOS LOGISTICS CANADA INC | | | SCAC4 |
| 5064 | PLCW | PLUNKARD, C W INC | | | SCAC3 |
| 5065 | PLCW | PROVINCIAL SIGN SYSTEMS | | | SCAC4 |
| 5066 | PLCX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 5067 | PLCX | General Electric Railcar Services Corp. | added 10/1992; 1/1994; eliminated 1/2000 | | NAKINA |
| 5068 | PLCX | Pullman Leasing Co. | added 4/1981; eliminated 1/1990 | | NAKINA |
| 5069 | PLCX | Itel Rail Corp. | added 1/1990; eliminated 10/1992 | | NAKINA |
| 5070 | PLCX | Pullman Leasing Co., a Subsidiary of Pullman Inc. | added 1/1976; 1/1980; eliminated 4/1981 | | NAKINA |
| 5071 | PLCX | Plastics Division, Allied Chemical Corp. | added 4/1961; 4/1961; eliminated 7/1964 | | NAKINA |
| 5072 | PLCX | Plastics and Coal Chemicals Division, Allied Chemical Corp. | added 10/1958; eliminated 4/1961 | | NAKINA |
| 5073 | PLCX | Plastics and Coal Chemicals Division, Allied Chemical Corp. | added 10/58; eliminated 4/61 | | NRHS |
| 5074 | PLCX | Plastics Division, Allied Chemical Corp. | added 4/61; 4/61; eliminated 7/64 | | NRHS |
| 5075 | PLCX | Pullman Leasing Co., a Subsidiary of Pullman Inc. | 1/80; eliminated 4/81 | | NRHS |
| 5076 | PLCX | Pullman Leasing Co. | added 4/81; eliminated 1/90 | | NRHS |
| 5077 | PLCX | Itel Rail Corp. | added 1/90; eliminated 10/92 | | NRHS |
| 5078 | PLCX | General Electric Railcar Services Corp. | added 10/92; 1/94; eliminated 1/2000 | | NRHS |
| 5079 | PLCX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 5080 | PLCX | *PLASTICS DIV., ALLIED CHEMICAL CORP. | | | PWRC |
| 5081 | PLCX | +(NATX) GENERAL ELECTRIC RAIL SERVICES CORP. [ITEL RAIL CORP.; PULLMAN LEASING CO.] | | | PWRC |
| 5082 | PLCX | PORT OF LAKE CHARLES | | | PWRC |
| 5083 | PLCX | Pullman Leasing (GE Capital Railcar Services) | | | RSRV |
| 5084 | PLCX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 5085 | PLCX | General Electric Rail Services Corp. | | USA | TRAFFIC |
| 5086 | PLCY | PEPSI LOGISTICS COMPANY INC | | | SCAC4 |
| 5087 | PLCZ | POTLACH LUMBER CO. | | | PWRC |
| 5088 | PLDB | PLANNED DISTRIBUTION SERVICES INC | | | SCAC3 |
| 5089 | PLDC | PAN-AM TRUCKLINE LTD | | | SCAC4 |
| 5090 | PLDE | PLUMMER, D AND E TRUCKING INC | | | SCAC3 |
| 5091 | PLDE | PRODUITS LEON DESLIPPE INC | | | SCAC4 |
| 5092 | PLDG | PREMIUM LOGISTIC SERVICES LLC | | | SCAC4 |
| 5093 | PLDH | PETROSOFT LLC | | | SCAC4 |
| 5094 | PLDI | PALESTRO DISTRIBUTION CENTER, INC | | | SCAC3 |
| 5095 | PLDI | PALESTRO DISTRIBUTION CENTER INC | | | SCAC4 |
| 5096 | PLDL | PLENDL BROS | | | SCAC3 |
| 5097 | PLDN | PALLADIN DISTRIBUTION SYSTEMS | | | SCAC3 |
| 5098 | PLDP | PLD TRANSPORT INC | | | SCAC4 |
| 5099 | PLDQ | PARCEL DELIVERY QUICK INC | | | SCAC3 |
| 5100 | PLDQ | PORT LAND TRANSPORT | | | SCAC4 |
