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Seamless and efficient exchange of flight information within the aviation industry requires the development and use of consistent practices, rules and principles.

To facilitate this exchange of data and to standardize schedule/slot data handling procedures, the Standard Schedules Information Manual (SSIM) is published annually. The SSIM is the official set of standards, guiding the industry with recommended practices, messaging formats and data processing procedures that are to be used by all IATA member airlines and their business partners for the exchange of airline schedules, communication of airport coordination information and minimum connect time data.

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  1. Global PAX COMBO (PSCRM + PTCCM + AIRIMP + SSIM + RAM + THB + RHB). Order the bundle online.

 

What’s inside the SSIM?

  • Chapter 2 – Information Required for Standard Schedules (Data Requirements, Data Representation, Data Elements and Data Element Identifiers)
  • Chapter 3 – Standard Print Layouts for Schedules Information (Data Elements Required, Code Sharing Flights, Plan Change, Examples)
  • Chapter 4 – Standard Schedules Message Procedure (Principles and Rules, Messaging Standards, Technical Message Specification)
  • Chapter 5 – Ad hoc Schedules Message Procedure (Principles and Rules, Message Standards, Technical Specification, Technical Message Specification)
  • Chapter 6 – Airport Coordination Procedures (Principles and Rules, Standard Procedures and Messages, Message Standards, Message Specifications)
  • Chapter 7 – Presentation and Transfer of a Schedule Data Set (Principles for the Transfer of Computerized Schedules, Computerized Schedules Constraints, Application)
  • Chapter 8 – Presentation, Application, and Transfer of Minimum Connecting Time (MCT) Data (Establishing MCTs, Practice for the Submission of MCTs, Application)
  • Appendix A IATA Aircraft Types (Aircraft Type Codes, Aircraft Group Codes, ICAO Codes)
  • Appendix B Meal Service Codes
  • Appendix C Service Types
  • Appendix D Passenger Terminal Indicators (Assignment Principles, List of Passenger Terminals)
  • Appendix F UTC-Local Time Comparisons and ISO Two letter Country Codes (ISO country code, time Zone, Standard variation to UTC, Daylight Saving Time information)
  • Appendix G Traffic Restriction Codes Table
  • Appendix H Explanatory Notes on SSIM Applications
  • Appendix I Region Codes (Region codes, IATA TC areas, ISO country codes)
  • Appendix J Information Codes for Use in the Airport Coordination Process (Additional information Codes, Coordinator Reason Codes)
  • Appendix K General Aviation Slot Clearance Request
  • Attachment 3 MCT Coordinator Contacts

Still not sure the SSIM is for you? Download the full table of contents

Stay up-to-date

Significant Changes and Amendments to the 36th edition (2026) of the Standard Schedules Information Manual (SSIM) include:

  • Chapter 2 – Clarification added on the use of General Information data element.
  • Chapter 3 – Standard for print layouts no longer supported in SSIM. Chapter 3 has been removed as agreed by the Schedules Publication Group (SPG).
  • Chapter 6 – Use of Action Code D (Delete Data) during Initial Submission of new season. Waitlist Slot becomes available - Clarification added on how a coordinator can notify that a waitlisted slot is available and how an airline can confirm whether it will accept.
  • Appendix A – New Assignment Principle Code added. New and revised Aircraft Type Codes.
  • Appendix D – New and revised Passenger Terminal entries.
  • Appendix F – Daylight Saving Time Information for 2026-2027 and 2028.