What was found
OUT OF AIRPORT, AT APPROX 20,000 FT, RECEIVED "HYD GREEN RSVR LO LVL" CAUTION. FOLLOWED COM, LANDING GEAR GRAVITY EXTENDED AND LANDED UNEVENTFULLY. CORRECTION WAS TO REPLACE HYD LINE IN LT WHEEL WELL AND NR 1 ENG DRIVEN PUMP IAW LOG PAGES 4568789 AND 0011489. (K)