ASDE-X in US. Why Mode C comment?
The following note is in effect on the Jepp pgs for FLL as well as several other US airports:
ASDE-X SURVEIILLANCE SYSTEM IN USE: PILOTS SHOULD OPERATE TRANSPONDERS WITH MODE C ON ALL TWYS AND RWYS.
The wording seems to imply you must use Mode C. Does that make any sense? Most large commercial aircraft use Mode S transponders and I'm inclined to think thats sufficient (Mode S XPNDRS interrogate and reply to Mode C equipment.) There is no way to specifically select Mode C.
I guess my question is that if I'm operating a Mode S XPNDR in an ASDE-X environment, am I complying with ASDE-X requirements?