The Directorate General of Civil Aviation (DGCA) on Wednesday, 6 July said that smoke was detected in the cabin of a Raipur-Indore IndiGo flight post the carrier's landing on Tuesday, NDTV reported.
The DGCA noted that on multiple occasions, "the aircraft either turned back to its originating station or continued landing to the destination with degraded safety margins."
Stating that SpiceJet had thus failed to establish a "reliable, safe and efficient airline services," it issued a show-cause notice asking why "action should not be taken against the company."
However, speaking to NDTV, the DGCA said that most incidents are routine and addressed expeditiously.
"On an average about 30 incidents do take place, which includes go-around, missed approaches, diversion, medical emergencies, weather, technical, bird hits. Most of them have no safety implications," DGCA chief Arun Kumar was quoted as saying.
In another incident on Tuesday, a Vistara flight, which was flying from Bangkok to Delhi, suffered an engine failure after landing at the Delhi airport, leading the plane to be towed to the parking bay.
Vistara said that one of the engines of the plane had developed a "minor" electrical malfunction after the aircraft landed at Delhi's Indira Gandhi International Airport on Tuesday.
(With inputs from NDTV.)