What was found
UPON EXTENDING FLAPS TO POSITION NR 1 FOR LANDING IN PDX, RECEIVED TE FLAP DISAGREE MESSAGE AND TRAILING EDGE WARNING LIGHT. FLAPS DID NOT MOVE OUT OF UP POSITION, CREW DECLARED AN EMERGENCY. PERFORMED ALTERNATE FLAP EXTENSION PROCEDURE, LANDED WITHOUT INCIDENT. VISUAL AND OPERATIONAL CHECK OF FLAP SYSTEM CHECKED NORMAL. THE AIRCRAFT RETURNED TO SERVICE.