This document specifies minimum reliability test requirements for sub-components of commercial aircraft passenger seats. Test procedures including in-service load cases regarding passenger behaviour for sub-seat components are specified. Abuse loads are excluded. This document is applicable to the sub seat components such as but not limited to backrest, headrest, armrest, table, literature pocket and control elements. This document does not apply to belts, Inflight-Entertainment, seat dress cover and cushions. Additional environmental influences like temperature, radiation, gases and liquids may also alter the reliability of the aircraft passenger seats and their sub-components over their lifetime but are not taken into consideration in this document. Tests on abrasion and surface durability are specified in EN 4860, EN 4864 and EN 4876.