AIP Supplements
AIP SUPs will normally contain items of a temporary nature only. To be included in an AIP SUP, changes must be of operational significance and contain comprehensive text and/or graphics (eg: major air exercises or aerodrome work) that preclude 'complete' promulgation by NOTAM.
AIP SUPs are issued every 28 days. An index of current AIP SUPs is included with each issue.
An AIP SUP is to be kept in the AIP as long as all or some of its contents remain valid. The period of validity of the information contained in the AIP SUP will normally be given in the SUP itself. Alternatively, NOTAM may be used to indicate changes to the period of validity or cancellation of an AIP SUP.