Source: Simon Hradecky | www.avherald.com

A Thai Vietjetair Airbus A320-200, registration HS-VKC performing flight VZ-320 from Bangkok to Hat Yai (Thailand), was climbing through 4000 feet out of Bangkok’s runway 19R when the crew observed smoke from the avionics. The crew stopped the climb at FL100 and returned to Bangkok for a safe landing on runway 01L about 20 minutes after departure.

Thailand’s AIB reported there were no injuries and no damage. The occurrence was rated a serious incident and is being investigated.