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Full Breakdown

IndiGo Flight Diverted to Lucknow After Cargo Smoke Warning

By Drooid · · How we work

Diversion Details

On September 15, IndiGo flight 6E6504 from Agartala to New Delhi was instructed to land at Lucknow’s Chaudhary Charan Singh Airport after the cargo-hold smoke detection system triggered an alert. The aircraft touched down safely at 6:29 p.m.; all occupants were unharmed. The crew declared a general emergency (transponder code 7700) before the diversion.

Background & Context

The incident follows recent cargo-smoke alerts involving Delhi-bound flights diverted to Lucknow. On September 3, Air India Express flight IX 1253 from Varanasi to Delhi made a precautionary landing at the same airport after a similar alarm sounded in its aft cargo compartment. That aircraft, carrying 155 passengers, also landed without injury and was later inspected with no evidence of smoke or fire. Lucknow has handled several weather-related diversions in early September, underscoring its role as a regional diversion hub.

Data & Statistics

  • Occupants: Most reports list 103 passengers and 6 crew members (total 109). One source described the flight as carrying “over 150 passengers,” creating a discrepancy.
  • Timing: Departed Agartala at 4:36 p.m.; landed in Lucknow at 6:29 p.m.

Official Statements & Responses

Lucknow airport officials said emergency response protocols were activated, deploying fire-and-rescue teams, ambulances, medical personnel, security staff and terminal support. IndiGo confirmed the aircraft was grounded pending a technical inspection and clearance from the Directorate General of Civil Aviation (DGCA). An alternate aircraft was arranged to transport passengers to Delhi, targeting a 9 p.m. departure.

A source involved in the initial inspection reported no visible smoke in the cargo bay; a detailed technical examination is underway to determine the cause of the alarm.

Conflicting Reports & Gaps

The primary inconsistency concerns the passenger count: most outlets specify 103 passengers, while one report claims “over 150 passengers.” No clarification has been provided by the airline or airport authorities. The exact nature of the smoke warning—false alarm or latent fault—remains undetermined as the investigation continues.

Why It Matters

Back-to-back cargo-smoke alerts raise questions about the reliability of smoke detection systems on narrow-body aircraft in India’s domestic network. Repeated diversions to Lucknow highlight the airport’s capacity to manage emergency landings but also strain its resources and passenger itineraries.

What’s Next

IndiGo’s aircraft VT-ISY will remain grounded until the DGCA issues clearance after the technical inspection. The airline plans to dispatch an alternate flight to complete the Agartala-Delhi route later on September 15. Updates are expected from the DGCA and IndiGo once the investigation concludes.