The nation of about five million people, still considered one of the safest relative to others in Central America, saw 603 homicides last year, according to preliminary data from the police service responsible for investigating them.
The plane burst into flames on impact, according to rescue officials and locals.
Initial reports said the other 17 people were rescued from the water.
Turkish aid agency TIKA gives hurricane-damaged city of Upala building supplies, equipment
The order from Costa Rica's migration service said its change was made after "two years of studies" and the "necessary changes" were based on international accords.
Two people died in Bagaces, a town north of the capital San Jose, and another in Upala on the border with Nicaragua, police told national television networks.
Eight flights suspended at the main international air terminal, authorities say
Some people were being evacuated from the surrounding area as a precaution, but there were no reports of damage or injuries.
The Central American state was the first in the region to open an embassy in Turkey.
Costa Rica condemned an alleged US campaign against Cuba communist regime being conducted from San Jose.
Solis has promised to fight Costa Rica's stubbornly high poverty rate while stamping out corruption, an issue that has dogged President Laura Chinchilla's administration.
Araya, of the ruling centrist National Liberation Party, said he would no longer campaign, though under the constitution his name will remain on the ballot.
Costa Rica plans to file a complaint with the court at The Hague in which it will ask the court to determine its borders with Nicaragua in the Pacific Ocean and the Caribbean