What was found
DURING FLAP RETRACTION, SYS A PRESSURE DECREASED TO APROX 1000 PSI FROM FLAPS 5 -2 PRESSURE DECREASED. ENG 1 A PUMP LIGHT ILLUMINATED INT AND WITH FLAP RETRACTION SYS A QTY WAS JUST UNDER 1 GAL, COMPLIED WITH QRH RETURNED IND. INSPECTED ACFT FOR LEAKS, NO LEAKS FOUND. RAN ENGINES IAW JRH AND CYCLED FLAPS SEVERAL TIMES. "A" SYS QTY FLUCTUATES BETWEEN 3 & 4 GALLONS WITH FLAPS UP OR DOWN, SUSPECT "A" SYS INDICATION PROBLEM. R & R "A" HYD SYS FLUID QTY TRANSMITTER IAW AMM 29-33-001-4. R & R "A" SYS QTY INDICATOR AT S/O'S STATION IAW MM 29-33-000, OPS CHECKED NORMAL. R & R "A" SYS PRESSURE INDICATOR IAW MM 29-31-000 OPS CHECKED NORMAL. RAN ENGINES IAW AND QTY READ 2 GALLONS LOW AFTER CYCLING FLAPS. SERVICED HYD WITH 2 GALLONS IAW MM 12-12-000 "A" SYS NOW READS FULL. RAN ENGINES IAW JRH AND CYCLED FLAPS SEVERAL MORE TIMES QTY NO LONGER FLUCTUATES AND READS FULL AT THIS TIME. "A" SYS QTY INDICATION OPS CK NORMAL IAW MM 29-11-000. MADE CONFERENCE CALL WITH MOCC, ACFT OK FOR SERVICE.