What was found
ALL ENG INDICATIONS WERE NORMAL ON TAKEOFF ROLL, BUT DURING CLIMB NR 1 ENG OIL QTY DROPPED TO 14%. LEVELED OFF, WHEN POWER DECREASED OIL QTY ROSE TO 60%. CONTINUED CLIMB & QTY DECREASED TO 20%. RETURNED AT GATE OIL QTY AT 78 %. ALL OTHER INDICATIONS NORMAL. PERFORMED TEST 3B, NO ABNORMAL ENG INDICATIONS. PLA NR 1 ENG OIL QTY INOPERATIVE. OIL SERVICED TO FULL. R & R NR 1 ENG OIL QTY TRANSMITTER IAW AMM 79-31-01 MEL CLOSED. ROTABLE PARTS CHANGE WAS INDICATED. TT 1672283, SN OFF 00256 IPC REFERENCE NR.