Gippsland Service Bulletin SB-GA8-2009-59 Issue 1
Background: Cracking of the internal structure has been noted in some horizontal stabilisers in the lower flange of the inboard ribs and or the lower flange of the rear spar splice channel. The cracks have developed adjacent to the stabiliser mounting channel attachment bolts. Gippsland Aeronautics has developed a new load distribution fitting for installation into the horizontal stabiliser for improved load distribution. Compliance with this document does not remove the requirement for internal inspections in accordance with Service Bulletin SB-GA8-2002-02.