Speaking of Air Serv. I called them a few months ago and they were looking for Caravan captains. They definitely wanted you to have 1500 PIC before they would even look at you. After that though I think they would take just about anybody.

Apparently they have some competitors in Africa who also bid for the various UN and USAID projects there. Those companies are mostly South African and require you to have an RSA certificate.

Here's a couple of blogs I stumbled across while looking for information. Both of these guys spent a year in Africa working for Air Serv. They're pretty entertaining.

Nomadic Pilot Geek

Archie does Africa