What was found
AFTER DEPARTURE FROM TOL UPON GEAR RETRACTION, 'A' SYSTEM QTY DROPPED TO ZERO. CREW MANUALLY LOWERED GEAR AND RETURNED TO TOL. CREW USED BRAKES TO TURN OFF RUNWAY. A/C TOWED TO RAMP. LT MLG DOOR SEQUENCE VALVE, P/N 10-60580-2 S/N 728 WAS FOUND TO HAVE A RUPTURED CASE. THE DOOR SEQUENCE VALVE, BOTH 'A' SYSTEM PUMPS, BOTH CASE DRAIN FILTERS AND THE 'A' SYSTEM PRESS FILTER WERE REPLACED. A/C WAS SERVICED WITH 14 GAL SKYDROL, ENGINE RUN ACCOMPLISHED TO BLEED SYSTEM AND LEAK CHECK, LEAK CHECK GOOD. A/C WAS JACKED AND GEAR SWING ACCOMPLISHED SYSTEM OPS CHECKED GOOD. A/C RETURNED TO SERVICE. (M)