What was found
DURING TAXI, HYDRAULIC MAIN ACCUMULATOR BLEEDS DOWN RAPIDILY, AS DOES OUTBOARD, INBOARD BRAKE ACCUMULATORS. FREED STICKY CHECK VALVES ON HYDRAULIC MANIFOLD. LEAKAGE RATE TEST GOOD IAW 290000. REMOVED AND REPLACED HYDRAULIC PRESSURE SWITCH IAW AMM 29-10-45. (M)