What was found
MLG WOULD NOT EXTEND ON LANDING. COMPLETE M/G EXT ABNORMAL PROCEDURE. LANDED WITH NO NOSEWHEEL STEERING. EXT TOOK 20 TURNS. WOULD NOT EXTEND DUE TO ITEM 1P. LOSS OF GREEN SYS HYD. RESTORED EXT/RET SYS TO NORMAL IAW MM. MANUAL HANDLE RETURNED TO NORMAL W/ 20 TURNS. MWP (HYD) AND GREEN TANK (LEVEL LO) LIGHT ILLUMINATED. QTY WAS AT BOTTOM OF YELLOW ARC. (HYD FLUID LOSS) ABNORMAL PROCEDURE COMPLETED. APPROX .5-1 GAL FLUID REMAIN. MWP (HYD) AND (PUMP PRESS LO) LIGHT ILLUMINATED. COMPLETED ABNORMAL PROCEDURE. NR 1 GREEN PUMP IS IN (DUMP) AND GREEN. ELEC PUMP(1)IS ON. REMOVED AND REPLACED O-RING ON GREEN SYS MANIFOLD IAW MM. REMOVED AND REPLACED NR 1 ENG DRIVEN PUMP IAW MM. OPS CK, LEAK CHECK GOOD.