What was found
RECEIVED LEVEL 1 "HYD 3 ELEV OFF" ALERT. NR 3 SYS INDICATED 4.4 GALLONS AND OVER A 10 MIN PERIOD DECREASED TO 4.0, DIVERTED. DURING GEAR EXTENSION, NR 3 QTY DECREASED TO 1.7 GALLONS WITH "HYD 3 QTY LO". AFTER LT TURN OFF RUNWAY, MX TOW IN. FOUND O-RING TO HYD PRESSURE TRANSDUCER IN RT WHEEL WELL AT NR 3 SYS MANIFOLD BLOWN OUT. R & R O-RING ON TRANSDUCER REF AMM 29-12-46-2 AND SERVICED HYD TO PROPER QTY REF AMM 12-13-02. PRESSURE AND LEAK CHECKS GOOD.