A long-haul Air India flight en route from Delhi to London was forced to turn back mid-flight on March 26, 2026, after the crew reported unusual vibrations and noise, marking the latest in a string of operational incidents for the carrier.
Flight AI 111, operated by a relatively new Airbus A350-900, departed Indira Gandhi International Airport in Delhi early Thursday morning but reversed course while flying over eastern Saudi Arabia as a precautionary measure. The aircraft landed safely back in Delhi with no reported injuries.
Mid-Air Issue Prompts Precautionary Return
According to flight tracking data, the aircraft took off at 00:43 UTC (6:13 AM IST) and initially climbed to a cruising altitude of 36,000 feet. During its journey, the plane experienced several altitude changes—dropping to 30,000 feet before climbing again—which, while not unusual in isolation, may have been linked to the emerging technical issue.
At approximately 4:06 UTC, the flight crew reported abnormal vibrations and noise emanating from the aircraft. The situation prompted the pilots to initiate a precautionary diversion back to Delhi in the interest of passenger and crew safety.
Air traffic control communications indicated that the cockpit crew identified the issue as a technical malfunction involving vibration and noise and requested clearance to return to VIDP, the ICAO code for Delhi’s airport.
Reports of Loud Noise in Aircraft’s Rear Section
Additional reporting suggested the disturbance originated from the aft section of the aircraft, near the cargo hold. The sound was described as a loud grinding or thumping noise, significant enough to interfere with cockpit communications.
The severity of the noise raised operational concerns, prompting the pilots to act conservatively and return to base rather than continue the long-haul journey to London Heathrow.
The aircraft landed safely at 7:21 UTC. The flight was operated by a 2.4-year-old Airbus A350-900, registered as VT-JRF and powered by Rolls-Royce Trent XWB-84 engines.
Aircraft Previously Involved in Similar Incident
Notably, the same aircraft had been involved in a prior incident on a separate route. It previously operated flight AI 102 from New York JFK to Delhi, which was diverted to Shannon, Ireland, due to unusual vibrations reported from the underbelly section.
While it is unclear whether the two incidents are related, the recurrence raises questions about potential mechanical or maintenance issues involving the aircraft.
Air India has not yet disclosed the exact cause of the latest incident. The airline is expected to conduct a thorough inspection and investigation before returning the aircraft to service.
Growing Scrutiny Amid Recent Incidents
This event marks the fifth major incident involving Air India within a two-week span, drawing increased attention to the airline’s operational reliability as it continues its modernization efforts under Tata Group ownership.
While aviation experts note that such diversions are not uncommon and are often executed out of an abundance of caution, repeated technical disruptions can impact airline reputation and operational efficiency.
Industry analysts emphasize that modern aircraft are designed with multiple redundancies, allowing crews to safely manage and respond to in-flight anomalies. However, recurring issues involving the same aircraft may warrant deeper technical review.
Similar Incident Highlights Industry Norms
A comparable situation occurred in May 2025 involving a Delta Air Lines flight departing New York’s LaGuardia Airport for Miami. Shortly after takeoff, the crew reported a loud noise near the nose landing gear and declared an emergency.
The Boeing 737-800 diverted to John F. Kennedy International Airport and landed safely within 15 minutes. Despite reported vibrations during landing rollout, no injuries were recorded, and the aircraft was later taken out of service for inspection.
Such incidents underscore standard aviation safety protocols, where flight crews prioritize caution and immediate response to any irregularities.
Awaiting Further Details
Air India has yet to release an official statement detailing the root cause of the vibration and noise reported on flight AI 111. The aircraft remains under inspection, and further updates are expected as the investigation progresses.
For now, the safe return of the flight highlights the effectiveness of precautionary measures in commercial aviation, even as the frequency of recent incidents places the airline under closer scrutiny.
