As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SAL - FLT 441 - AFTER TAKEOFF, WHEN PILOT SELECTED FLAP TO UP POSITION, IT DID NOT RESPOND. ALTERNATE FLAP EXTENSION WAS PERFORMED FOR LANDING. THE AIRCRAFT RETURNED TO THE EL SALVADOR AIRPORT. THE AIRCRAFT REMAINED ON GROUND FOR MAINTENANCE. (M)