Air Serv limited has a hige gangar at EBB and one aircraft. To convert from FAA to Uganda is an easy process. Look up
www.airserv.org (The Humanitarian "Not For Profit" Arm) of the Uganda operation & give them a shout, or via that site you could get hold of the Manager in EBB, chap called D'Arcy (Canadian Guy)
EBB is a very beautiful spot on Earth, good luck