What was found
TOTAL LOSS OF A-SYS HYD AT FLT LEVEL 280. GEAR MANUALLY EXTENDED AND FLAPS WERE EXTENDED THROUGH ALTERNATE FLAP MASTER. REMOVED AND REPLACED SPOILER RETURN LINE RT. FOUND 2 BROKEN BRACKETS AT SPOILER CLOSE OUT PANEL, REMOVED AND REPLACED SAME (P/N 65-21658-36) AND (B27-57-001-13). PER CREW, PUMPS WERE SHUT OFF IMMEDIATELY WHEN A-SYS HYD WENT DOWN. REMOVED AND REPLACED A-SYS CASE DRAIN FILTERS PRECAUTIONARY, THEY WERE CLEAN. RAN ENG 1 AND 2 PER JET RUN HANDBOOK, LEAK CK OK, SERVICED AND BLEED HYD SYS.