One or more amber In Transit lights or green EXT lights
illuminated indicate a fault or partially extended device.

Protection is provided by the FSEU (Flap/Slat Electronic Unit) for
asymmetric motion, uncommanded motion and skew.

The LE FLAPS Transit light
on the Forward Center panel will
also illuminate.

The Master Caution lights will not illuminate.
LE Devices Annunciator Panel
Aft Overhead Panel  700/800/900