By Jethro Mullen, CNN
January 1, 2015

(CNN) — Searchers looking for more bodies and wreckage from AirAsia Flight QZ8501 in the Java Sea faced fresh difficulties with bad weather Thursday.

Ships, planes and helicopters are being used to find victims of the disaster. Most of the people on board the flight remain missing, and officials are yet to confirm that they’ve found the plane’s fuselage.

Here’s key information about where things stand:

The flight

What we know: Flight QZ8501 took off early Sunday from Surabaya, Indonesia, bound for Singapore. Roughly 35 minutes into the flight, the pilot asked air traffic control for permission to turn left and climb to a higher altitude to avoid bad weather. Minutes later, the plane disappeared from air traffic control’s radar.

What we don’t know: What happened on board after contact with the plane was lost. No distress call was received. Indonesian aviation authorities have suggested that the plane ascended despite permission being denied because of traffic.

Some experts have speculated that the aircraft might have experienced an aerodynamic stall because of a lack of speed or from flying at too sharp an angle to get enough lift. Analysts have also suggested that the pilots might not have been getting information from onboard systems about the plane’s position, or that rain or hail from thunderstorms in the area could have damaged the engines.

Until the main wreckage of the plane is found, along with the flight recorders, experts have little evidence to support their theories. Read the rest of this entry »