SpiceJet said its flight heading to Jabalpur returned to Delhi on Saturday after the crew members observed smoke in the cabin at around 5,000-feet altitude.
This is fifth such incident on SpiceJet aircraft in two weeks. Aviation regulator Directorate General of Civil Aviation is investigating all the five incidents.
On June 19, an engine on SpiceJet's Delhi-bound aircraft carrying 185 passengers caught fire soon after taking off from the Patna airport and the plane made an emergency landing minutes later. The engine malfunctioned because of a bird hit.
