An IndiGo Boeing 787-9 Dreamliner operating from London Heathrow to Delhi declared an emergency over the English Channel on Tuesday evening, 22 September 2026, and returned safely to Heathrow a little over an hour after departure.
The aircraft landed without further incident and was met by emergency services on the runway.
The cause of the emergency has not yet been confirmed.
What Happened on Flight 6E4 to Delhi…
Flight 6E4 departed Heathrow’s Runway 27R at 20:05 BST on its scheduled overnight service to Indira Gandhi International Airport in Delhi.
According to AirLive, the crew selected the 7700 squawk code, which signals a general onboard emergency, while the aircraft was climbing through 24,000 feet over the English Channel.
The crew then turned the Dreamliner back towards London.
AirLive reported that the aircraft was established on approach to Runway 27L by 21:18 BST and touched down at 21:23 BST.
Emergency services reached the aircraft shortly after landing, and fire crews escorted it to a remote stand, which it reached at around 21:37 BST.
Flightradar24 data lists the Delhi service as diverted to LHR. The aircraft had arrived in London earlier that afternoon on the inbound 6E3 rotation from Delhi.
Cause Not Yet Confirmed
AirLive noted that the precise nature of the issue, whether technical, mechanical or medical, has not been officially confirmed.
IndiGo has not yet issued a public statement explaining why the crew chose to return.
Squawking 7700 gives an aircraft immediate landing priority, clears airspace ahead of it and places rescue services on standby at the destination airport.
Crews often declare an emergency as a precaution, so the decision alone does not indicate how serious the problem was.
The move to a remote stand is also common practice while engineers and emergency crews inspect an aircraft.
About the Aircraft, LN-FND
The aircraft involved is LN-FND, a Boeing 787-9 powered by two Rolls-Royce Trent 1000 engines and was the aircraft operating the flight to Delhi.
It carries 338 seats, split between 56 in a premium cabin and 282 in economy.
The jet has had a varied career.
It was first delivered to Norwegian Air UK on 8 March 2018 as G-CKWB, leased from AerCap, and wore the airline’s “Arthur Collins” tail design.
Norwegian withdrew it from use on 16 March 2020 as the pandemic collapsed demand, and it spent almost two years in storage at Stavanger and then Shannon.
AerCap reregistered the aircraft as EI-HCT in March 2022 before placing it with Norse Atlantic Airways, where it flew as LN-FND.
Norse originally named it “Dartmoor” before renaming it “Antarctica” in December 2024.
IndiGo took the aircraft on lease from Norse Atlantic Airways on 3 June 2026.
It forms part of the fleet of leased Dreamliners that IndiGo is using to build its long haul network between India and Europe, including services from Mumbai and Delhi to London and Amsterdam.
What Happens Next for the Delhi Service
Engineers will now inspect the aircraft before it returns to service.
Flightradar24 shows LN-FND scheduled to continue flying on IndiGo’s Mumbai and Delhi rotations to London later this week.
The Aviation Hub will update this article if IndiGo confirms the cause of the emergency or shares further details about passengers on the Delhi flight.
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