Air India AI2379: Why It Suddenly Dropped 300 Feet

Air India Flight AI2379: Why the Jet Suddenly Dropped 300 Feet Mid-Air | Full Explainer

Aviation Safety · Breaking Explainer

Flight AI2379 · Phuket → Delhi Date August 4, 2026 Aircraft Airbus A320neo

300 ft Sudden altitude loss

36,000 ft Cruising altitude

17 People injured

137+8 Passengers & crew

The Air India flight drop of 300 feet happened in seconds. Passengers were thrown into overhead bins, an attendant was seriously hurt, and within a day, Air India’s own explanation for what happened had changed twice.

Inside the cabin of Air India flight AI2379 after the sudden altitude drop, showing scattered footwear and disrupted seating — Inside the AI2379 cabin after the sudden altitude drop — loose items and footwear scattered down the aisle.

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Air India flight AI2379 was flying from Phuket, Thailand, to Delhi on August 4, carrying 137 passengers, including three infants, and eight crew members. While cruising above 36,000 feet, the Airbus A320neo abruptly lost about 300 feet of altitude, throwing unsecured passengers and cabin crew against the ceiling and fixtures in the space of a few seconds.

The aircraft stabilized and continued on to Delhi, landing normally at 11:07 a.m. local time. But the cabin was left visibly damaged, and medical teams were waiting on the tarmac.

In flightAircraft cruising above 36,000 ft suddenly loses ~300 feet in seconds; passengers and crew thrown around the cabin.

Shortly afterAircraft stabilizes and continues its normal flight path toward Delhi.

On landingPlane lands safely in Delhi; emergency medical teams meet the aircraft and treat the injured.

Within 24 hoursAir India revises its public description of the event; India’s DGCA opens a formal investigation.

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Reported injury figures shifted as more details emerged, landing somewhere between 8 and 17 people depending on the outlet. Thirteen passengers and four of the six cabin crew were confirmed injured, with most sustaining bruises, sprains, and minor cuts. One flight attendant’s injuries were classified as severe. By the following day, Air India confirmed all 13 injured passengers had been discharged, while the affected crew members remained under medical care.

Passenger account

Travelers on board described the aircraft dropping not once but twice in quick succession, with bags, food carts, and unbelted people lifted off their feet before slamming back down.

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The first public explanation was simple: severe turbulence. That’s also the official line still used by most news coverage. But the story has gotten more complicated as investigators dug into the flight data and cockpit voice recordings.

Air India’s own wording shifted from a “turbulence-related event” to a “sudden loss of altitude,” while India’s civil aviation regulator has pointed to a “suspected transient technical fault” as the likely cause. — Reporting based on DGCA and Air India statements, August 2026

That distinction matters. Turbulence is an external weather event the crew can’t control. A “transient technical fault” points instead to something inside the aircraft’s systems, possibly involving the autopilot or flight control computer, momentarily commanding or allowing a change in altitude that had nothing to do with the air outside.

What investigators are looking at

Flight data recorder and cockpit voice recorder, both secured after landing
Whether atmospheric conditions like wind shear or a jet stream pocket were present at the time
Possible autopilot or flight computer irregularities on this specific A320neo
Manufacturer input, with Airbus reportedly notified as part of the review

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The Phuket-Delhi incident hasn’t happened in isolation. Air India has faced heightened regulatory scrutiny in 2026, including a separate Delhi-Vienna flight that reportedly plunged nearly 900 feet mid-air, prompting both cockpit crew members to be pulled off duty pending investigation. That episode came shortly after a fatal Air India crash on departure from Ahmedabad, intensifying pressure on the airline’s maintenance and operational standards.

Incident	Route	Altitude Loss	Suspected Cause
AI2379	Phuket → Delhi	~300 ft	Technical fault suspected, turbulence initially cited
Delhi–Vienna flight	Delhi → Vienna	~900 ft	Under DGCA investigation
Emirates EK-530	Dubai → Kochi	~200 ft	Heavy turbulence

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Sudden altitude loss isn’t unique to Air India. In May 2024, a Singapore Airlines flight hit severe turbulence over Myanmar that caused a violent drop, killing one passenger and injuring dozens, and forcing an emergency landing in Bangkok. A month later, a Korean Air flight plunged more than 26,000 feet after a rapid cabin depressurization, leaving passengers with ear pain and breathing difficulty. These events, alongside a much older case where a Jet Airways flight dropped 5,000 feet over Turkey due to a distracted cockpit crew, show that both weather and human or technical failure can produce the same terrifying result: a plane that suddenly isn’t where it’s supposed to be. For more on incidents like this, see our full aviation safety coverage.

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Sudden altitude changes, whatever the cause, are rare, and modern aircraft are built to handle far more stress than a 300-foot deviation. The single biggest factor in whether a passenger walks away unhurt is simple and boring: seatbelt use. If you’re booking your next trip, check out our guide to staying safe during turbulence.

Keep your seatbelt fastened whenever you’re seated, even when the sign is off
Stow loose items so they can’t become projectiles during sudden movement
Treat crew instructions during unexpected turbulence as immediate, not optional

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