Authorities are also investigating factors such as maintenance, procedures and training that may have contributed to the crash.
from Travel Feedly http://www.ibtimes.com/airasia-flight-8501-captain-was-out-his-seat-when-co-pilot-lost-control-plane-sources-1801348
from Travel Feedly http://www.ibtimes.com/airasia-flight-8501-captain-was-out-his-seat-when-co-pilot-lost-control-plane-sources-1801348