The plane was nearing the end of its 400-kilometer (248-mile) trip between Manaus, the capital of Amazonas state, and the remote jungle town of Barcelos when it went down.
Officials said all those on board - 12 passengers and two crew - were killed in the crash. An investigation has been launched into the cause of the incident.
Amazonas state security secretary Vinicius Almeida said initial information suggested the plane crashed after running out of runway when it descended into Barcelos during heavy rain and low visibility.
The plane was an EMB-110, a twin-engine turboprop manufactured by Brazilian aircraft-maker Embraer.
The plane's owner, Manaus Aerotáxi, said the aircraft and its crew met all the necessary requirements to be flying. (ILKHA)