The following is the modification status of the occurrence rudder: [...] Modification 5844 (Glass Intermediate Layer). The occurrence rudder was a post-modification 5844 (Service Bulletin [SB] A310-55-2012) design, which incorporated a GFRP layer between the honeycomb and the CFRP skin, rather than aramid fibre–reinforced plastic (AFRP) as used in ^([sic]) earlier design. 2007, Transportation Safety Board of Canada, “1.5.7 Rudder Modification Status”, in Aviation Investigation Report A05F0047, Loss of Rudder in Flight, Air Transat Airbus A310-308 C-GPAT, Miami, Florida, 90 nm S, 06 March 2005, archived from the original on 01 May 2021, page 10: