IndiGo's parent InterGlobe Aviation has received a warning letter from the Directorate General of Civil Aviation (DGCA) following an audit that flagged deviations from standard operating procedures, including certain provisions under the Aircraft (Carriage of Dangerous Goods) Rules, 2026, the airline disclosed in a regulatory filing.

The warning stems from a cargo spillage incident detected on the ground after a flight arrived, which was reported in January 2026. A subsequent audit uncovered the SOP deviations that prompted the DGCA to issue the letter, which the airline received on July 8, 2026.

Responding to the development, an IndiGo spokesperson said that the spillage of cargo was detected on one of our flights in January 2026 after its arrival. "As a responsible airline, we immediately and proactively informed the relevant authorities following the established protocols, and subsequently shared the findings of our investigation. We have since received a warning letter from the regulator and are incorporating the recommendations laid out in the same. At IndiGo, we remain committed to full compliance with all relevant regulatory guidelines. The safety of our customers remains our topmost priority," the spokesperson said.

In its disclosure to the stock exchanges under Regulation 30 of SEBI's Listing Obligations and Disclosure Requirements, InterGlobe Aviation said the DGCA has directed the company to submit an action taken report detailing the corrective measures undertaken.

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The airline said no penalty, restriction, or sanction has been imposed pursuant to the communication, and that there is no significant impact on its financials, operations, or other activities as a result of the warning.

InterGlobe Aviation also flagged a delay in making the disclosure, attributing it to an internal communication gap rather than any intentional lapse.

"The delay in disclosure was unintentional and was caused due to a delay in internal communication of details pertaining to receipt of the aforementioned letter," the company said in the filing signed by Company Secretary and Chief Compliance Officer Neerja Sharma.