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[INTERNATIONAL] · India, Thailand, France · 19 sources

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Air India flight AI2379 experiences hydraulic failure and 300-foot altitude drop

An Airbus A320neo operating Air India flight AI2379 from Phuket to Delhi experienced a critical technical failure on August 4, resulting in a sudden 300-foot altitude drop. A preliminary technical assessment by Airbus revealed that all three hydraulic systems—green, blue, and yellow—failed in rapid succession, causing a loss of control for approximately four seconds. During this period, the aircraft’s elevator and aileron control surfaces were disrupted, and the autopilot system disconnected.

The incident resulted in injuries to at least 20 passengers and four cabin crew members. While Air India initially attributed the altitude change to in-flight turbulence, maintenance reports and technical data indicate a series of hydraulic faults and flight control warnings.

The Aircraft Accident Investigation Bureau (AAIB) is leading the investigation into the technical failure, with support from France’s Bureau of Enquiry and Analysis (BEA). Concurrently, the pilot-in-command is under scrutiny after testing positive for marijuana in a confirmatory drug test. Investigators are examining the sequence of events, system data, and human factors to determine the exact cause of the hydraulic pressure loss.

Entities

Air India · Airbus · Aircraft Accident Investigation Bureau · Bureau d’Enquetes et d’Analyses · Delhi · Directorate General of Civil Aviation · Phuket

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