As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLAP EXTENSION HAD L/E INTRANSIT LIGHT FOR NR 4 SLAT AND L/E FLAPS/SLAT INTRANSIT LIGHT ON FWD PANEL. WITH FLAPS AT 15 DEG THERE WAS AN INCREASE IN AIR NOISE, LEVEL AND A/C YAWED. EMERGENCY DECLARED, FLAPS RECYCLED INDICATION REOCCURED BUT NO YAW. FOUND PROX SWITCH OUT OF ALIGNMENT. ADJUSTED SAME. LUBED FLAPS, ALL CHECKS NORMAL.