Flight QZ8501

The airline's maintenance system was "not optimal", investigators said.

The second black box, containing the cockpit voice recorder, has been located but not yet retrieved.

The teams have found the fuselage and now are focusing in on the black box

There were no survivors from the Indonesia AirAsia Flight QZ8501 that vanished from radar screens on Dec. 28.

The black box recorders would give vital information about the cause of the crash

More than 30 bodies have now been recovered, along with pieces of the broken-up plane.

Rescuers believe they have found the plane on the ocean floor off Borneo

The plane's black box has yet to be located

The rescuers have reported sighting bodies and luggage near a Borneo island

It's more likely that cold weather froze a vital component of the aircraft.

Hope to recover the plane has quickly disappeared as the search continues

Aviation incidents accounted for four of the top 10 major insurance losses not linked to natural catastrophes in the first eight months of 2014.

The flight, traveling from Surabaya, Indonesia, to Singapore, has been missing for just over 24 hours.

The AirAsia group has not had a crash since its Malaysian operations began in 2002.

"Remarkably, 2014 has the lowest number for passenger flight accidents in modern aviation history."

Indonesia AirAsia Flight QZ8501, an Airbus 320-200 with 162 people aboard, is young by commercial aircraft standards.

The plane went missing after pilots asked to change course to avoid bad weather during a flight from Indonesia's Surabaya city to Singapore.

The manufacturer said the plane was delivered in 2008 and had recorded 23,000 flight hours

The plane requested to take an unusual path due to weather before contact was lost.