Aviation expert Harshvardhan on Friday downplayed the ongoing controversy over suspension of Jet Airways crew members, who allowed Sonu Nigam to perform impromptu on the aircraft's address system, saying it was not a safety violation and the playback singer could not be seen as a security threat.

"Generally such things happen in aircrafts. It is usually seen as a promotional event. Sometimes, airlines themselves organise such events. In-flight entertainment system is one such example. I don't think there is a safety violation. There is no such provision in the Aircraft Safety Act. When the emergency lights are switched off, there is no control on movement and sound. I think this is a wrong action by the DDCA," he said.

The aviation expert further said that airlines all over the world organise such shows and concerts to create an image and give passengers something to talk about.