Independent sensor is such, it's a wired independent discreet signal from the prox sensor to the instrument panel through the box.
Single Ailse relies on LGCIU 1 for the panel indication. Hence this box is a no dispatch as per MEL.
A lights indication that is dispatchable with the same philosophy is a BSCU channel A inop, if that has crapped out you do not get the Autobrake indication lights, only the ECAM wheels page indication.
LGCIU 1 & 2 Fault i doubt any indication. Wheels page may have clue bar trying an extension. If both are dead I gather your QRH will be a Gravity Extension.
Last edited by Beeline; 9th July 2012 at 16:59.