BMKG: hail in the cloud allegedly triggered the accident QZ8501

BMKG: hail in the cloud allegedly triggered the accident QZ8501

Pictures weather satellite imagery when Air Asia plane lost contact

Extreme weather on Sunday (28/12) and the possibility of causing the crash of Air Asia QZ8501, as revealed "meteorological analysis", published by the Bureau of Meteorology, Climatology and Geophysics Agency BMKG.

In as much as the 14-page study published in the BMKG website, preliminary analysis indicates that the aircraft had flown Air Asia may enter into a storm cloud or cumulonimbus.

Case the weather affects flight

January 6, 2002, Garuda Indonesia Airlines flight No. 421, a Boeing 737-300 with registration PK-GWA experienced dual-engine flameout (power loss) as a result of trying to avoid the storm clouds.

January 1, 2007, Adam Air flight 574 (KI 574, 574 DHI) majors Jakarta-Surabaya-Manado, suffered damage to navigational aids Inertial Reference System (IRS) due to bad weather.

December 22, 2014 Airlines Singapore Airlines A330-300 type 9V-SSD beregistrasi flight number SQ-615 carrying 268 passengers and 13 crew members experienced turbulence (shock) severe level in the regular flights from Osaka (Japan) to Singapore.

Head of Research and Development Research Professor Edvin Aldrian BMKG said when events occur are storm clouds containing grains of ice or icing is at a height from 30's of thousands of feet up to 48 thousand feet.

"Based on the available data on the location of the last aircraft received the weather is a factor triggering the occurrence of the accident," said Aldrian, "beads of ice can cause engine damage due to cooling air."

Meteorological analysis revealed IR satellite imagery to identify convective clouds on a flight path that is passed AirAsia QZ8501, and shows the peak temperature of the cloud reaches -80º to -85ºC and means there are grains of ice in the cloud (icing).

While at an altitude of 32 thousand feet, the temperature is expected to reach more than -25 degrees Celsius.

"However this is only one possibility analysis based on meteorological data is available, and is not a cause of the accident was the final decision," said the BBC's Aldrian Indonesia, Sri Lestari.

The aircraft requested permission to air traffic control tower in Jakarta, to fly at an altitude of 38 thousand feet from its original position 32 thousand feet to avoid Cumulonimbus.

But when it is no other plane immediately above it so that permission is not granted, when permission was given no response and the plane lost contact.

National Search and Rescue Agency Basarnas Saturday (03/12) morning announced that it has discovered two large pieces of aircraft AirAsia search location in central Kalimantan Karimata Strait.

By Saturday afternoon, 30 bodies have been evacuated, and four passengers were identified by the DVI team. (BBC)