| Rank | Abbreviation | Meaning |
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| ***** | CREW TO PASSENGER RATIO. | The number of passengers on a cruise ship divided by the number of crew members. In theory, the lower the number, the higher the level of service.
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| ***** | PASSENGER SPACE RATIO. | A statistical measure that compares the total public space of a cruise ship to the passenger capacity, resulting in the theoretical amount of public space allotted to each passenger. A high passenger
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| **** | PASSENGER NAME RECORD (PNR). | A file on a global distribution system containing all the information relating to a specific booking. Also called 'personal name record.'
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| **** | PASSENGER OF SIZE. | A euphemism for an extremely large or obese person; used primarily in the airline industry, where such passengers are required to purchase a second seat.
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| ** | PASSENGER MILE. | A statistical norm comprising one passenger traveling one mile. Passenger mileage is determined by multiplying the total number of miles flown (for airlines) by the total number of passengers carried.
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| * | PASSENGER FACILITY CHARGE. | A fee imposed by a facility owner, as an airport, on those using the facility; typically added to the cost of a fare.
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| * | PASSENGER SERVICE INDICATOR. | A one- or two-digit code, administered by IATA, which identifies specific passenger terminals at airports having more than one such terminal.
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| * | PASSENGER SERVICE AGENT. | An airline employee assigned to assist passengers checking in and boarding.
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| * | IATA ACCREDITED PASSENGER AGENT. | A non-U.S. travel agency appointed to sell tickets on behalf of members of IATA.
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| * | REVENUE PASSENGER MILE. | A statistical unit in the airline industry; one fare-paying passenger carried one mile.
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| * | PASSENGER TRAFFIC MANAGER. | 1. An airport-based airline manager. 2. Individual in a company who handles travel arrangements for other employees.
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| * | PASSENGER SERVICE REPRESENTATIVE. | An airline employee assigned to providing information and other services, such as wheelchair assistance.
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| * | PASSENGER NETWORK SERVICES CORPORATION. | Former name of International Airlines Travel Agent Network (IATAN).
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| * | MID-AIR PASSENGER EXCHANGE. | Slang. Tasteless air traffic control term for a collision between two planes.
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| * | PASSENGER VESSEL SERVICES ACT (PVSA). | A protectionist law of 1886 forbidding foreign flag vessels from carrying passengers between United States ports.
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