What was found
FLAPS WOULD NOT EXTEND AT ALL WITH FLAP HANDLE. USED ALT EXTENSION, WORKED FINE, LANDED WITH FLAPS AT 15. MAINTENANCE CONFIRMED FLAP ASYMMETRY WAS PRESENT. CHECKED WIRING AT D275. NO FAULTS. LT NEEDLE INDICATED 1 UNIT WITH FLAPS UP. FOUND LT TRANSMITTER AT FAULT. REMOVED AND REPLACED TRANSMITTER IAW AMM 27-58-12-404. WITH FLAP INDICATOR, NEEDLES MATCHED, STILL HAD ASYMMETRY. FOUND GROUND AT INDICATOR PINS 12-14 PROVIDING GROUND FOR ASYMMETRY. REMOVED AND REPLACED INDICATOR IAW AMM 27-58-41-404.OPERATIONAL CHECK OK.