I've seen 2 safety videos of A330s - one with [Nepal Airlines][1] and another of (now defunct) Jet Airways (not able to find it now).

Both of them say that **doors 3 left and 3 right cannot be used in a water evacuation**.

Why is it so?


  [1]: https://www.bing.com/videos/riverview/relatedvideo?q=nepal%20airlines%20safety%20video&mid=3E464FC938E3CA08B35B3E464FC938E3CA08B35B&FORM=VIRE