After two false EGPWS escape manuevers triggered by RA "hits" in moderate/heavy rain (which, by the way resulted in panels and or counterbalances of the elevator shedding), it is my understanding that the FedEx MD-11's have been modified as such. Also, I believe the radar altimeters were modified to reduce their sensitivity.
Any FedExer's out there care to add information?
https://www.ntsb.gov/ntsb/brief2.asp...02MA039&akey=1
http://www.aircraftone.com/aircraft/...0604X00806.asp
Previous occurence:
http://www.aircraftone.com/aircraft/...1212X18968.asp