As part of our approval of the SGS 2-33B we have revised the old 2-33 & 2-33A Flight - Erection - Maintenance Manual into the FAA Approved Sailplane Flight Manual (SFM) for The SGS 2-33, 2-33A & 2-33B Sailplane. This was a major re-formatting of the manual to meet the FAA Approval guidelines and to make the manual easier to use and navigate. The manual has numerous revisions that affect the 2-33, 2-33A & 2-33B models.You can contact us via email or phone to order a copy for your aircraft. The current revision date is 2/15/22.