What was found
SAL - FLT 441 - AFTER TAKEOFF, WHEN PILOT SELECTED FLAP TO UP POSITION, IT DID NOT RESPONDED. ALTERNATE FLAP EXTENSION WAS PERFORMED FOR LANDING. THE AIRCRAFT RETURN TO THE EL SALVADOR AIRPORT. AT EL SALVADOR STATION, MAINTENANCE TECHS TESTED THE FLAPS INDICATION ACCORDING TO AMM 27-58-01. THE POSITION TRANSMITTER LT/RT WERE REPLACED DUE TO INTERMITTENT WORKS ACCORDING TO AMM 27-58-12. ALSO, THE FLAPS POSITIONS INDICATOR WERE REPLACED ACCORDING TO AMM 27-58-41. AFTER SATISFACTORY FUNCTIONAL CHECKS, THE AIRCRAFT RETURNED TO SERVICE. (M)