August 2011 archive

Decompression Sickness in HA Reconnaissance Aircraft

Pilots flying high altitude (HA) reconnaissance sorties are vulnerable to decompression sickness (DCS) due to, exposure to “pressure equivalent up to 29,500 ft (8992 m) of altitude for over 8 h” [1]. Cruise altitude of such HA reconnaissance aircraft viz. U-2 [2] and MiG 25 [3] is 70,000 ft and 74,000 ft, respectively. There are two …

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Are SD accidents not so Common in Aviation?

Accidents due to Spatial Disorientation (SD), in military and general aviation, reportedly vary between 2.1 to 31% [1 – 11]. Despite of physiological limitations of the ‘human’ operator, accident statistics do not correctly reflect SD as a cause, as commonly as expected, especially in the military aviation. In fact, in a review of accidents due …

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Loss of Control: Human Factors in Air France Flight 447

Investigating the crash of Air France Flight 447 [1], from Rio de Janeiro to Paris, into the Atlantic Ocean on 01 June 2009, the French Bureau of Enquiry and Analysis for Civil Aviation Safety (BEA = Bureau d’Enquêtes et d’Analyses pour la Sécurité de l’Aviation Civile) released an interim report on 29 Jul 11. This …

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