Air Asia 8501 Possible Causes?

Intro
An Airbus A320-216 operated by Malaysian "Air Asia" crashed on 28 December 2014, making 2014 a deadly year for Malay aviation after MH 370 went missing and MH 17 was shot down over Ukraine.

Multiple investigator has concluded that the bad weather played a big role on the accident, but what remains a mystery is how a plane just all of the sudden lose all contact with the ATC. For the victims family for MH flight 370 this is all too clear, but could a mechanical failure and a simultaneous electrical failure bring down a sophisticated fly by wire aircraft, could a hidden flaw be at fault?

Legacy
A plane electricity is generated by a spinning generator connected to the engine and the APU. The APU is only used when the engines are turned off and the aircraft on the ground. A dual simultaneous engine failure is incredibly rare. Even an engine failure due to fuel starvation will leave an engine powered for an extra 5-10 minutes after the first one has failed and one engine is more than enough to bring an airplane landing safely.

Back in 1983, Air Canada 143 (Gimli Glider) lost both engines due to Canada's transition from imperial to metric that caused the aircraft to take off with just half the fuel needed for the trip, the plane managed to land in an abandoned airstrip without any engine power. Even though an aircraft is incredibly heavy, aerodynamics prevents the aircraft to fall like a "rock" should all thrust be depleted.

Fate
The aircraft was climbing to FLT 380 which is 38000 feet above the ground to avoid bumpy weather. Another plane may be a clue to the investigation, Adam Air 574 went off course and "mysteriously" disappeared after the plane tipped over and crashed off Celebes after pilot error, distortion and IRS malfunction.

Bad weather and that the plane was climbing could play a factor on the crash of the aircraft, high angle of attack and slow climbing speed could tip the plane over should a strong enough wind come from the side of the aircraft or the back.

Strong tailwind might have caused the aircraft to stall as the aircraft ground speed was a little low. The weather could produce winds of over 160 km/h, and that is something all aircraft should avoid to hinder chaos.

Captain Iriyanto, had over 6000 flying hours with Air Asia and over 22000 total flying hours with his career that started in the Indonesian Air Force.

First Officer Rémi Emmanuel Plesel had over 2200 hours flying with Air Asia and he is originally from France but was living in Indonesia.