Steelie,
I lost a mate in that crash also, initials DG ring a bell?
I stepped off the merry go round a few years ago but back then all UN humanitarian air ops were run under the aegis of the WFP air support unit in Rome, even if chartered locally by a different UN agency the deal had to be run through the guys in Rome first, they checked paperwork, licences etc.
As an aside, Mi8's were a no no for Pax, something about dodgy providence IIRC.