Overview
- The incident occurred Tuesday when flight 6E4 from London to Delhi halted its climb near 24,000 feet, set transponder code 7700 to signal a general emergency and returned to London Heathrow, where it landed safely.
- IndiGo said a technical issue was detected shortly after take-off and that pilots followed standard procedures to turn back and prioritise safety.
- The aircraft, a Boeing 787-9 registered LN-FND, has been taken out of service for on-site maintenance checks and will resume operations only after required clearances are granted.
- Some media outlets reported smoke on board after take-off, but the airline has not confirmed that detail and official inspections and investigations are ongoing.
- Squawk 7700 notifies air traffic control that an aircraft needs priority handling and emergency support, and passengers were offered hotel stays and rebooking while the grounding may cause further schedule delays for IndiGo.