As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK, DECLARED EMERGENCYAFTER TAKE OFF TE & LE SLATS RETRACTED NORMALLY. HOWEVER LE FLAPS TRANSIT ILLUMINATED YELLOW WITH LE FLAP PANEL DISPLAYING FLAP 3 FULL EXTEND & FLAP 4 IN TRANSIT. DURING FLAP EXTENSION, TE FLAPS EXTENDED NORMALLY, BUT LE SLATS REMAINED UP. R&R NR 3 K FLAP ACTUATOR PER MM.