The local aviation scene in costa rica is very private, its hard to find info online.
Nature Air is upgrading their fleet to Dornier 228's, and some more newer Dash 6's. They are also looking to get some Dash 8 Q200's.
Sansa Airlines flies Cessna 208 Caravans on the same routes as Nature Air.
Only two or three IFR Certified Airports in Costa Rica. Lots of dirt strips and remore strips off beaches and jungles. Very cool and challenging flying down there.
Must be legal to work in Costa Rica, spanish is not neccesary but recommend it!
And must transfer all FAA licenses over to DGAC, (Costa Rica's FAA)
Most airlines offer an ok pay, and pretty much will have you home every single night. Mostly day flying due to not having lighted runways for the most part of the country.
I'm a Costa Rican local, and hopefully will be going to fly for a costa rican regional in the next year or so.
Times required are usually minimun Commercial , INS, and ME licenses, just like great lakes.
Here are some pictures:
TSA lines at this airports are very fast!