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Welcome to Japan Schedule Coodination(JSC)

Japan Schedule Coordination (JSC) is an independent non-profit organization under the Japan Aeronautic Association (JAA) which is a national foundation established for the purpose of promoting the development of aeronautics and astronautics in Japan and enhancing the cooperation with world aerospace communities. JSC is in charge of slot allocation for Narita International Airport (NRT), Tokyo International Airport (Haneda) (HND), Fukuoka Airport (FUK) and Kansai International Airport (KIX), and schedule facilitation for New Chitose Airport (CTS).

New Year Holidays of JSC

Our office will be closed from 28DEC to 05JAN for new year holidays and resume our business on 06JAN. Please note that there will be possible delay in processing requests during this period. SCR/SMA for the period which will be released to each FAIB at the beginning of January can be accepted by 31DEC 23:59(JST). (For more details, please refer to the page Schedule Release Date. Wishing you happy holidays.

Slot Monitoring

10th Edition of IATA WSG became effective on 1 August 2019 which is downloadable from the bottom of this page. The significant change compared with the previous edition is the inclusion of “Slot Monitoring” which is described in a new Chapter 9. Based on this inclusion, the slot monitoring program will be initiated in Japan effective S20.

The purpose of this monitoring is mainly the calculation of 80/20, misuse of slots and on time performance (OTP). Slot monitoring is divided in two parts; Pre-Operation Analysis and Post-Operation Analysis. The results of the monitoring will be reported at the occasion of Airport Coordination Committee (ACC). The details can be found in the attachement. >> Attachment

// ATTENTION ALL AIRLINES //
*Applicable to HND/NRT/FUK/KIX/CTS
According to requirements set by JCAB, JSC is asking ALL airlines to indicate the reason for slot returns/ schedule cancellations within SI field of your SCR/SMA when they occur after the slot return deadline set by IATA. For details, please see the page Slot Monitoring.

Slot Usage Information Inquiry

JCAB/JSC introduced a new initiative that airlines can request the slot usage information at any time in the middle of the season from W23. JSC is the first contact for airlines.

When requesting the information, airlines should note that it is basically their responsibility to monitor the usage of slots and the usage result is subject to amendment reflecting the actual operational status or the cancellation reason.

IATA Slot Conference (SC)


The Slot Conference (SC) is a “Working Conference". With 1200 delegates, from over 230 airlines and representatives of over 85 schedules facilitated or fully coordinated airports, this semi-annual working conference is IATA's largest event. The goal of the conference is for airlines and airports to obtain the slots that will give them the best possible schedule to offer their customer.

The 155 Slot Conference (SC) for the 2025 Summer Scheduling Season, 30 March 2025 through 25 October 2025, was held in Singapore, from November 19 to 22, 2024.
>>>>>more detail (https://www.iata.org/en/events/all/sc155/)
The 156 Slot Conference (SC) for the 2025 Winter Scheduling Season, 26 October 2025 through 28 March 2026, will be held in Vancouver, Canada, from June 17 to 19, 2025.
>>>>>more detail (https://www.iata.org/en/events/all/sc156/)

Worldwide Airport Slot Guidelines (WASG)


The Worldwide Airport Slot Guidelines (WASG) is a document that defines the policy, principles, process for slot allocation and slot monitoring that airlines schedulers, coordinators and facilitators have to follow. The airport levels, the role of airlines, airports, coordinators and facilitators, the priorities of coordination, and ‘Use It or Lose It' rule (U/L), etc. are defined in this WASG. The WASG is developed and maintained by three parties; IATA, Airport Council International (ACI) and Worldwide Airport Coordinators Group (WWACG).
>>>>>more detail (https://www.iata.org/en/policy/slots/slot-guidelines/)