Full Breakdown
Air India A320’s Triple-Hydraulic Failure Over New Delhi Triggers Injuries and Drug-Testing Review
9/5/2026, 8:05:41 AM
Incident Overview
On August 4, Air India flight AI2379, an Airbus A320 en route from Phuket, Thailand, to New Delhi, experienced a sudden loss of all three hydraulic systems while cruising at 36,000 feet. The failure caused the autopilot to disengage, a two-second stall warning, and an altitude upset in which the aircraft first rose about 372 feet (113 m) and then dropped roughly 292 feet (89 m). The hydraulic pressure recovered after about nine seconds, allowing the aircraft to resume normal operation and land safely. Twenty-four passengers and crew were injured during the abrupt pitch changes.
Technical Findings and Ongoing Investigation
India’s Aircraft Accident Investigation Bureau (AAIB) issued a preliminary report on September 4 describing the “triple-hydraulic failure” and noting that the cause of the pressure loss remains unidentified, requiring further analysis. The report also recorded that the pilot-in-command’s confirmatory drug test returned a “non-negative” result for psychoactive substances, while the co-pilot’s tests were negative. The AAIB highlighted the drug-test finding as a “serious concern” and recommended prompt regulatory action.
Official Responses
The Indian Civil Aviation Ministry classified the event as a “serious incident” and indicated it is reviewing stricter screening rules for psychoactive substances. Air India, owned by the Tata Group, announced a mandatory one-time drug screening for all its pilots and is cooperating fully with investigators by providing operational, maintenance, and technical records. Airbus, together with France’s civil aviation safety agency (BEA), is assisting the AAIB, confirming that the A320’s hydraulic loss briefly left key flight-control surfaces unresponsive.
Context and Impact
The incident follows heightened scrutiny of Air India after the June 2025 crash of a Boeing 787 that killed 260 people. The combination of a rare hydraulic failure and a pilot’s non-negative drug test has intensified calls for more rigorous, possibly annual, drug-testing protocols—currently only 10 % of pilots are tested each year. Regulators and industry observers view the event as a catalyst for reviewing both aircraft system resilience and crew substance-use policies.
Key Data Summary
- Passengers: 137; Crew: 8 (including two pilots)
- Injuries: 24 (passengers and cabin crew)
- Altitude change: +372 ft then -292 ft
- Hydraulic loss duration: ? 9 seconds, with all three systems affected
- Pilot drug-test result: non-negative for psychoactive substance (reported as marijuana by a Reuters source)
The AAIB’s full report is pending, and further recommendations are expected as the investigation proceeds.
