DGCA probe shows evidence of engine oil in "engine bleed-off valve", which led to oil entering the aircraft air conditioning system, thus resulting in smoke inside the cabin.
There was no earlier report of any malfunction with the aircraft. A replacement aircraft is being sent to Karachi that will take the passengers to Dubai, says SpiceJet
Akasa Air is scheduled to receive 18 aircraft from Boeing by March 2023, followed by delivery of the remaining 54 aircraft over the course of next four years.
At least 11 passengers on SpiceJet's Mumbai-Durgapur flight were injured on Sunday after the Boeing B737 aircraft faced severe turbulence during descent.