What was found
TASK CARD 900-53-900-504 2 LT, 4 RT, 6 TOTAL RUBBER DECOMPRESSION PANEL BETWEEN FS 280.00 & FS 477.40 ARE TORN. UPON GEAR RETRACTION RECEIVED NR 3 HYD CAUTION FOLLOWED BY GEAR DISAGREE WARNING HYD NR 3 WAS SHOWING BOTH PUMPS OFF, YELLOW FLOW LINES & 100% CAPACITY. BOTH SYSTEMS CORRECTED THEMSELVES DURING OUR QRH PROCEDURE. TROUBLE SHOT REVEALED NR 3 BRAKE ACCUMULATOR LOW, SUSPECT GAS LEAKING INTO SYS. R & R ACCUMULATOR IAW AMM 29-12-03. LEAK & OPERATIONS CHECKED GOOD. FURTHER TROUBLESHOOTING REVEALED DAMAGED PACKING ON HYD 3A ACMP INLET PORT, EXCHANGING AIR & FLUID. R & R PACKING IAW AMM 29-12-03. OPERATION CHECK & LEAK CHECKED GOOD, GEAR SWING IAW AMM 32-30-00 COULD NOT DUPLICATE DISC. ACFT OK FOR SERVICE. R & R NR 3 BRAKE ACCUMULATOR IAW AMM 29-12-03. R & R 3A ACMP INLET PORT PACKING IAW AMM 29-12-03. GEAR SWING IAW AMM 32-30-00. OPERATIONS CHECKED GOOD.