Guide to Using SSIM

Principles & Rules

Here are the main principles and rules for SSIM messages.

 

      All dates, days and times are in UTC

      Timings are on stand / off stand (not runway time)

      Dates and periods of operations must be within the season period

      Two seasons: Summer and Winter

      Summer starts on the last Sunday in March through to the Saturday of the last weekend in October

      Winter starts on the last Sunday in October through to the Saturday of the last weekend in March

      Messages must be answered within 3 business days

      Only 1 scheduled arrival and/or departure on the same day for a given flight designator

      Messages can be sent by SITA (LONACXH) or email (lonacxh@acl-uk.org). For email the following rules apply

      Plain text format only

      No attachments

      Email body must begin with the message format i.e. SCR

      Your email address must be specified in the reference line of the header

      Any non-standard text must be preceded by a GI footer line