Report: West Caribbean MD82 did not recover from high altitude stall

[joeyb747]

"The Venezuelean Ministry of Communication and Transport's Air Accident Invesitgation Commission (JIAAC) released their final report in Spanish concluding the probable cause of the accident was:

- operation of the aircraft outside the limits and parameters set by the aircraft manufacturer together with inappropriate flight planning failing to take climate conditions into account
- the absence of appropriate actions to correct the stall of the aircraft
- misguided ranking of priorities during the emergency

Given the aerodynamic and performance conditions the aircraft was taken to a critical state which led to loss of lift. Subsequently the cockpit resource management and decision making during the development of the emergency were misguided, probably caused by the following factors:

- situation awareness was insufficient or inappropriate disabling the crew to become aware of what was happening regarding the performance and behaviour of the aircraft
- lack of effective communication between the cockpit crew which limited the decision making processes, the ability to choose appropriate alternatives and establish priorities in the actions to counter the critical/emergency situation (stall at high altitude)"


From:

http://avherald.com/h?article=4308e7d6&opt=1024

The report tells the tale of a terrifying event that took the lives of 152 pax and 8 crew on Aug 16th 2005. The aircraft suffered a high altitude stall and fell to earth, reaching a sink rate of approximately 17,400 fpm before impacting the ground at Machiquez in Venezuela.    

Below is a pic of the aircraft that was lost in this tragic event, McDonnell Douglas MD-82 HK-4374X (cn 49484/1315).  

[alltheway]

Is at least someone aware of fighter pilots experience about high G-force movements?

Fighter jocks wear a pressure suit, what means it will cut off bloodflow at high rates of G forces. When a fighter jet goes fast up, the pilots blood will leave the head and it will become black for his/her eyes before becoming unconscious. When they descent fast the blood will get to their head and it will be red in their eyes, before becoming unconscious.

Airline pilots do not wear pressure suits and therefore if the airplane falls over 6000 feet per minute it will be dangerous for them and beyond that they will not be able to see anymore... (just like Air France 447)

[mhawke]

Fighter jocks wear a pressure suit, what means it will cut off bloodflow at high rates of G forces. When a fighter jet goes fast up, the pilots blood will leave the head and it will become black for his/her eyes before becoming unconscious. When they descent fast the blood will get to their head and it will be red in their eyes, before becoming unconscious.

Airline pilots do not wear pressure suits and therefore if the airplane falls over 6000 feet per minute it will be dangerous for them and beyond that they will not be able to see anymore... (just like Air France 447)

Not all fighter pilots wear G-suits.  The Blue Angles do not because it affects their ability to input very small control changes.  They use old fashion grunt technique.  The G-suits don't cut off bloodflow, instead they provide backpressure from legs to help keep blood from pooling in the legs.

Not sure where your "falling" description comes from.  Eyes don't turn red.  They don't turn black during high-G's.  The term blackout is related to the fact that as you lose consciousness, what you see becomes black because your brain is losing its higher functions from lack of blood flow.

During a decent, the blood is not going to pool into your head, unless you are pushing negative G's (accelerating faster then gravity) and that won't cause your eyes to go red.