Why aeroplane ******* have those tiny holes

[ahlam1399]

http://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBrgumQ.img?h=100&w=100&m=6&q=60&o=f&l=fFor anyone who has ever wondered why aeroplanes ******* have a small hole in them, be reassured: it's an important safety feature to stop the cabin from depressurising.

أكثر... (http://www.msn.com/en-in/travel/airtravel/this-is-why-aeroplane-*******-have-tiny-holes/ar-BBrmsIR?srcref=rss)