eat recline Hydrolok and 6 each P.L. Porter SLO2300-21 divan recline Hydrolok. Hydroloks were replaced using standard interior practices. Installed Erda Hydro Legrest P/N 302617-3 and mechanical control single P/N MC15-36 on two (2) cabin single seats Erda seat S/N 4360 and 4361 in accordance with Erda drawing 302617 Rev B. A