What was found
FLAPS FAILED WHEN SELECTED TO 5 DEGREES AT 17000 FT. THE RESET SWITCH RESETS BUT FAILS IMMEDIATELY WHEN FLAPS ARE SET TO A DETENT FOR EXTENSION. SLATS OPERATE NORMALLY. CLEANED FLAP CONTROL BOX CONNECTOR AND REMOVED FLAP CONTROL HANDLE FOR VISUAL INSPECTION. FOUND LARGE AMOUNTS OF LINT, DEBREE AND PAPER FILINGS INSIDE WHERE THE OPTICAL EYE IS LOCATED. CLEANED FLAP CONTROLLER HANDLE IAW MM 27-50-00. CYCLED FLAPS 12 TIMES CONTINUOUSLY, NO FAIL MESSAGE APPEARED AND NO CODES APPEARED EITHER. OPS CHECK GOOD AT THIS TIME.