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Rapid Depressurisation/Decompression
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'''Rapid Depressurisation/Decompression'''
  
 
==Definition==
 
==Definition==
  
Decompression which occurs rapidly but at a rate which is less than the rate the lungs can decompress by and therefore the lungs are not damaged.
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Decompression which occurs rapidly but at a rate which is less than the rate by which the lungs can decompress and, therefore, does not result in damage to the lungs.
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==Discussion==
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A rapid depressurisation event is more common than [[Explosive Depressurisation]] and is usually associated with larger aircraft. Depressurisation occurs in a matter of seconds at a rate greater than 7,000 ft/min, and is normally associated with a ‘bang’ and a sudden fogging of the cabin air.
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The greatest danger of depressurisation is crew incapacitation due to [[Hypoxia]]. The [[Time of Useful Consciousness]] will be reduced proportionally to the speed of the decompression. [[Decompression Sickness]] is another potential hazard associated with high altitude decompression.
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If the cause of the decompression is a structural failure, failure of a window for example, there may be a risk of some crew or passengers being buffeted by strong winds, hit by debris, and extreme cold temperatures, or even of being sucked out of the aircraft - another reason for wearing a seat belt or harness whenever seated.
  
 
==Related Articles==
 
==Related Articles==
 
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*[[Loss of Cabin Pressurisation]]
 
*[[Explosive Depressurisation]]
 
*[[Explosive Depressurisation]]
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*[[Gradual Depressurisation]]
 
*[[Aircraft Pressurisation Systems]]
 
*[[Aircraft Pressurisation Systems]]
*[[Aircraft Oxygen Systems]]
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*[[Oxygen Systems]]
*[[Emergency Depressurisation]]
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== Further Reading ==
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*See FAA "Lessons Learned from Transport Airplane Accidents": [http://lessonslearned.faa.gov/ll_main.cfm?TabID=3&CategoryID=13 Pressurization / Decompression Failures]
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*ATSB Report: [http://www.skybrary.aero/bookshelf/books/957.pdf Aircraft Depressurisation - Cabin crew information bulletin]
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*AIRBUS: [http://skybrary.aero/bookshelf/books/1269.pdf Flight Operations Briefing Note - Cabin Decompression Awareness]
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[[category: General OI]]
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[[Category:General]]
[[category: Operational Issues]]
 

Latest revision as of 08:09, 2 August 2017

Article Information
Category: General General
Content source: SKYbrary About SKYbrary
Content control: SKYbrary About SKYbrary

Rapid Depressurisation/Decompression

Definition

Decompression which occurs rapidly but at a rate which is less than the rate by which the lungs can decompress and, therefore, does not result in damage to the lungs.

Discussion

A rapid depressurisation event is more common than Explosive Depressurisation and is usually associated with larger aircraft. Depressurisation occurs in a matter of seconds at a rate greater than 7,000 ft/min, and is normally associated with a ‘bang’ and a sudden fogging of the cabin air.

The greatest danger of depressurisation is crew incapacitation due to Hypoxia. The Time of Useful Consciousness will be reduced proportionally to the speed of the decompression. Decompression Sickness is another potential hazard associated with high altitude decompression.

If the cause of the decompression is a structural failure, failure of a window for example, there may be a risk of some crew or passengers being buffeted by strong winds, hit by debris, and extreme cold temperatures, or even of being sucked out of the aircraft - another reason for wearing a seat belt or harness whenever seated.

Related Articles

Further Reading