Investigators hope the flight recorders will help explain why the Brazilian GOL airliner clipped a business jet over a remote area of northern Brazil on Friday.
The incident sent the Boeing crashing to the ground, but the seven people aboard the smaller Embraer-made Legacy escaped unharmed after the pilot made an emergency landing with a damaged wing.
Meanwhile, seven relatives of GOL Flight 1907's victims have flown to the crash site, where soldiers battled humidity, heat and dense vegetation to recover the bodies of the 149 passengers and six crew members who perished in Brazil's worst-ever aid disaster.
A French national, four young children and an 11-month-old baby were among the victims.
Difficult recovery
Brazilian soldiers hacked out a clearing for helicopters to land at the crash site, where military authorities said debris was spread over at least 20 square kilometres.
The Boeing 737-800 crashed to the ground as it flew from the Amazon city of Manaus to the country's capital Brasilia. Officials indicated the jet airliner plummeted nose first.
A team from the US Federal Aviation Administration was scheduled to arrive in Brazil on Tuesday to assist with investigations, Brazilian officials said.
On Saturday, President Luiz Inacio Lula da Silva declared three days of mourning.
GOL said that until the tragedy, its fleet had flown a total of 650,000 hours without any fatal accident since starting operations in 2001.
The airline said the pilot on Flight 1907 had logged more than 15,000 flight hours, including 4,000 in the cockpit of a Boeing 737.
GOL is Brazil's leading discount carrier. Its 53 planes serve some 50 domestic destinations as well as neighboring Argentina, Bolivia, Chile, Paraguay and Uruguay.
Brazil's previous deadliest air disaster occurred in June 1982, when 137 people were killed as a VASP Airlines Boeing 727 smashed against a hillside while preparing to land in the north-eastern city of Fortaleza.