What was found
DURING CLIMB TO ALTITUDE NOTICED VIBRATION. SELECTED CONFIG PAGE RIGHT INNER FLAP BOX WAS SHOWING EMPTY BOX OUTER BOX SHOWED 0 DESCEND TO FLIGHT LEVEL 20.000 STOWED AND EXTENDED SLATS AND FLAPS TO 15, THEN GOT A LEVEL TWO FLAP DISAGREE. PERFORMED INSPECTION. NO FAULTS ON FLAPS. RT FLAP IND DEFERRED. REMOVED AND REPLACED RIB FLAP POS TRANSMITTER IAW AMM 27-54-04-4. THIS CLEARS DMI 398999. PLACARD REMOVED.