What was found
DIVERSION: HYDRAULIC QTY INDICATION DISCREPANCY: 'A' SYSTEM HYDRAULIC QUANITY WAS NORMAL DURING PREFLIGHT AND T/O, 3.5 GALLONS. 'A' SYSTEM QUANITY DECREASED AFTER T/O TO 2.1 GALLONS AND THEN TO 1.4 DIVERTED TO LAS. SYSTEM RETURN TO 3.0 GALLONS UPON LANDING. ALL OTHER INDICATIONS WERE NORMAL FOR BOTH SYSTEMS. REMOVED AND REPLACED 'A' SYSTEM HYDRAULIC QUANITY TRANSMITTER PER MM 29-33-1. FIRST ONE WAS BAD FROM STOCK.