re Length of time to locate wreckage
2 days
at 2 june 2009
"1230 GMT: Debris is sighted by Brazilian search planes looking for the missing airliner 650km (390 miles) north-east of Brazil's Fernando do Noronha island."
at 31 may 2009
2200 GMT: AF 447 takes off from Rio de Janeiro's Galeao International Airport, heading for Paris Charles de Gaulle.