What was found
ON SELECTING FLAPS 15 L FLAP INDICATOR WENT TO 7.5 AND RIGHT TO 10 RAN QRH SELECTING FLAPS 5 WITH NO FURTHER FLAP MOVEMENT LANDED IN THAT CONDITION. GROUNDED - YES. PERFORMED FSEU BITE PROCEDURE REF FIM 27-51-TASK 801 FOUND MSG 27-52-261 FLAP SENSOR DISAGREE INSP FLAP TRIP INDICATORS PER AMM 27-51-00-820-402 FOUND IN NORMAL POSITION, REMOVED AND REPLACED FLAP INDICATOR 27-58-02 NO HELP 55555. FSEU BITE SHOWS EXISTING MSG 27-52259 TE FLSP SENSOR LEFT UNABLE TO RETRACT FLAP EACH TIME FLAPS LOCKED OUT AT 10 REMOVED AND REPLACED LEFT FLAP POSITION TRANSMITTER REF AMM 27-58-01. CYCLED FLAP NUMEROUS TIMES ALL INSTALLATION TESTS PASS WITH NO EXISTING FAULTS ON FSEU.