By Andrew Rosthorn
The doomed planes have ranged from the old Czech-built Let L-410 Turbolet workhorse that crashed at Bandundu in the Democratic Republic of the Congo in 2010, killing 20 people after a smuggled crocodile broke loose in the cabin, to a new Kenya Airways Boeing 737-800 that crashed into a Cameroon mangrove swamp after a midnight takeoff in bad weather at Douala, killing all 114 passengers and crew in 2007.