seat recline Hydrolok and 6 each P.L Porter 5102300-21 divan recline Hydrolok. Hydroloks were replaced using standard interior practices. Installed Erda Hydro Legrest PIN 302617-3 and mechanical control single P/N MC15-36 on two (2) cabin single seats Erda seat SIN 4360 and 4361 in accordance with Erda drawing 302