Around 160 passengers on board an IndiGo Delhi-bound flight from Vadodara on Sunday night (May 17, 2026) were forced to sit in the dark, sweating profusely for half an hour, as the ground power unit supplying electricity to the aircraft malfunctioned before the departure, according to sources.

The aircraft, operating IndiGo flight 6E 657 (Vadodara-Delhi), was to depart at 8:40 p.m.

At that time, the aircraft was getting power supply from the ground power unit, but it conked off, an airport official said.

It took about 12-15 minutes for the engineers to fix the glitch in the GPU and another 15 minutes to restore the power supply to the aircraft, he said.

“During these 30 minutes, there was complete darkness in the cabin, and with the AC also not functioning, the passengers were sweating badly,” the official said.

There were some 160 passengers on board the aircraft, he added.

IndiGo did not respond to a PTI query on the incident.

A GPU is equipment that plugs into an aeroplane when it is parked at the gate. It supplies the necessary electrical power to operate the aircraft’s lights, avionics, and air conditioning without needing to run its engines or onboard generator.

According to the live flight tracking website flightradar24.com, the Vadodara-Delhi flight was scheduled for departure at 8:40 a.m., but it could depart for its destination at 10 p.m., after a delay of 1:20 minutes.