ZAMBIA Airways has clarified that the deployment of oxygen masks to passengers on its Ndola-Lusaka bound flight was due to a “change in flight altitude”. On Monday, images of slightly deformed water bottles and passengers trying to block their ears to ease discomfort on the Zambia Airways flight went viral on social media, with some blogs reporting that the plane suffered a cabin pressure loss. But responding to a query in a statement, Zambia Airways said unlike other airlines, its plane demands deployment of oxygen masks upon a change in flight altitude. “We have noticed that there are some posts on social media with a short clip of a video showing the moment whereby cabin masks on our flight last evening...