What was found
UPON CLIMBING THROUGH 9,000 FEET, LOWER EICAS MESSAGE, FLT DATA ACC ILLUMINATED. AIRCRAFT ACCOMPLISHED UNSCHEDULED LANDING AT ORGINATION STATION. REASON FOR RETURN IS THAT JUST PRIOR TO DEPARTURE THE CVR HAD BEEN PLACED ON MEL STATUS. ACCOMPLISHED TEST PROCEDURE ON FDAU, NO FAULTS FOUND. CLEARED MESSAGE, PERFORMED OPS CHECK. SYSTEM OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)