What was found
ON CONFIGURING AND SELECTING FLAPS 25 WE RECEIVED A TRAILING EDGE FLAP DISAGREE WARNING AND ASSOCIATED CAUTION LIGHT. WE DISCONTINUED THE APPROACH AND LANDED FLAPS 20. EMERGENCY DECLARED. FIM: 27-51, FT 808 AMM: 12-13-06-3 AMM: 12-21-09-3 AMM: 27-51-00-5 NO FAILED LRU'S DURING BITE CHECK OF FESU 1, 2, OR 3. INSPECTED ALL FLAP TRANSMISSIONS OF BOTH LT & RT WINGS. FOUND RT WING INBOARD FLAP, INBOARD TRANSMISSION OVERLOAD INDICATOR TRIPPED. DRAINED & RESERVICED TO FULL, 15OZ. NO LEAKS NOTED. RESET INDICATOR. LUBRICATED BALLSCREW ACTUATORS, GIMBALS, & FLAP CARRIAGES OF ALL 8 TRANSMISSIONS. FOUND LT WING OUTBOARD FLAP, OUTBOARD TRANSMISSION EMPTY OF OIL. SERVCIED TO FULL, 15OZ. NO LEAKS NOTED. FOUND LT WING INBOARD FLAP, OUTBOARD TRANSMISSION SLIGHTLY LOW OF OIL. SERVCIED TO FULL 3OZ. NO LEAKS NOTED. FOUND RT WING INBOARD FLAP INBOARD BALLSCREW ACTUATOR VERY DRY OF OLD GREASE. LUBRICATED APPROPRIATELY. FOUND LT WING OTBD FLAP INBOARD BALLSCREW ACTUATOR VERY DRY OF OLD GREASE. LUBRICATED APPROPRIATELY. CYCLED FLAPS THROUGH FULL TRAVEL WITH NO DEFECTS NOTED. ALL OPS CHECKS GOOD. A/C OK FOR SERVICE.