Glossary
| ACARS | Aircraft Communication Addressing and Reporting System | Wiki |
| ACMI | Aircraft, Complete Crew, Maintenance, and Insurance, in terms of a Wet Lease | Wiki |
| AOC | Air Operator's Certificate | Wiki |
| AHP | Analytic Hierarchy Process | Wiki |
| AOC | Aeronautical Operational Control | Wiki |
| API | Application Programming Interface | Wiki |
| ASK/ASM | Available Seat Kilometers / Miles = total capacity | Wiki |
| ASM/SSM | Ad-hoc Schedule Message / Standard Schedule Messages | |
| ASP | Application Service Provider | Wiki |
| ATB | Automated Ticket and Boarding Pass | |
| ATPCO | Airline Tarif Publishing Company | Wiki |
| BSP/ARC | Billing and Settlement Plan (non US) Airlines Reporting Corporation (US) |
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| CDN | Content delivery network | Wiki |
| CRM | Customer Relationship Management | Wiki |
| CRS | Computer Reservations System | |
| CTO | City Ticket Offices | |
| CUPPS | Common Use Passenger Processing Systems | |
| CUSS | Common Use Self Service | Wiki |
| CUTE | Common Use Terminal Equipment | |
| DEA | Distribution Efficiency Analysis | |
| DCS | Departure Control System | |
| DP | Dynamic Pricing | |
| DS | Dynamic Schedule | |
| EDIFACT | Electronic Data Interchange For Administration, Commerce, and Transport | Wiki |
| EMD | Electronic Miscellaneous Document | Wiki |
| FSC | Full Service Carrier (Network Airline) | |
| FTK | Freight Tonne kilometers | |
| GL | General Ledger | Wiki |
| GUI | Graphical User Interface | Wiki |
| GDS | Global Distribution System | Wiki |
| IATA | International Air Transport Association | Wiki |
| IBE | Internet Booking Engine | Wiki |
| ISV | Independent Software Vendor | Wiki |
| LAN | Local Area Network | Wiki |
| LCC | Low Cost Carrier | Wiki |
| NDC | New Distribution Capability. IATA Resolution 787, A proposal for enhanced messaging. | |
| MRO | Maintain, Repair and Overhaul | Wiki |
| MUSE | Multiple Users System Equipment | |
| OAG | Official Airline Guide | Wiki |
| OOSD | Offer, Order, Settle, Deliver | |
| OTA | Online Travel Agent | Wiki |
| OTP | Official Airline Guide | Wiki |
| OPTAT | Off Premises TAT- used by travel agentsOfficial Airline Guide | |
| PADIS | Passenger and Airport Data Interchange. IATA data standard. | |
| PAX | the number of passengers carried by an airline | more |
| PBs | Passengers Boarded | more |
| PLB | Productivity Linked Bonus | |
| PNR | Passenger Name Record | Wiki |
| PSS | Passenger Services System | Wiki |
| QIK | Qantas Intelligent Keypad | Wiki |
| QSI | Quality Service Index | |
| RTPA | Real Time Priced Availability (Revenue Management). | Wiki |
| RPK | Revenue Passenger Kilometer | Wiki |
| RFID | Radio Frequency Identification | Wiki |
| RFI | Request For Information | Wiki |
| RFP | Request For Proposal | Wiki |
| RM | Revenue Management | Wiki |
| RMS | Revenue Management System | Wiki |
| RTK | Revenue Tonne Kilometres | |
| Segment | between where passengers first board an aircraft and their final destination | more |
| SSIM | Standard Schedules Information Manual | |
| TAT | Transitional Automated Ticket | |
| TMC | Travel Management Company | Wiki |
| VPN | Virtual Private Network | Wiki |
| WAN | Wide Area Network | Wiki |
Note: An explanation of segments, legs PBs, PAX, bookings and PNR