An Air India Airbus A320 underwent a terrifying loss of essential flight control systems in August while operating between Phuket and Delhi, an occurrence that has only now come to light through preliminary technical analysis conducted by aircraft manufacturer Airbus. The aircraft plunged approximately 90 metres during the incident, which resulted in injuries to 24 passengers and crew members aboard flight AI2379. Despite the severity of the malfunction, pilots managed to land the aircraft safely at the Indian capital, preventing what could have become a catastrophic outcome.
The incident unfolded on August 4 when the Delhi-bound service experienced a rapid cascade of system failures. According to Airbus's assessment reviewed by international media, the aircraft suffered losses in all three independent hydraulic systems in quick succession—a sequence of events that aeronautical engineers consider exceptionally rare and concerning. These hydraulic networks rely on pressurised fluid to operate the movable flight control surfaces and numerous other aircraft systems essential for safe operation.
For approximately four seconds, a critical window that would have felt like an eternity to those aboard, the flight crew found themselves unable to manipulate the elevators and ailerons. These control surfaces—the movable sections on the aircraft's wings and tail—are fundamental to an airplane's ability to change pitch and execute banking manoeuvres. Without their function, the aircraft pitched upward uncontrollably. The first officer responded by applying maximum nose-down input to the control column, yet the flight control surfaces failed to respond initially, creating a situation where pilot inputs had no measurable effect on the aircraft's attitude.
The recovery occurred when the three hydraulic systems restored themselves within seconds, allowing pilots to regain authority over the aircraft and establish a safe descent profile to Delhi. However, the abrupt altitude change subjected the aircraft to forces exceeding the structural design specifications, raising serious questions about potential internal damage not immediately visible during cursory inspections.
Airbus has initiated a comprehensive diagnostic process to determine the root cause of the simultaneous hydraulic failure, an event that should theoretically be prevented by the redundancy built into modern aircraft design. The manufacturer requested that Air India conduct extensive testing of the hydraulic systems themselves, as well as the pressure sensors and monitoring switches that are supposed to alert crews to system anomalies. Additional sensors are slated for removal and detailed laboratory analysis, with Airbus indicating that comprehensive wiring inspections may become necessary as the investigation deepens.
Structural integrity now represents another significant concern following the violent manoeuvre. Airbus has mandated thorough inspection of the aircraft to identify any internal or external damage caused by the sudden movement and the forces it generated. The airline has also been asked to provide complete maintenance records for the hydraulic systems dating back one month prior to the incident, along with detailed pilot accounts of the sequence of events.
The investigation has drawn attention from India's Aircraft Accident Investigation Bureau, which classified the event as a serious incident and initiated a formal inquiry with technical support from Airbus and France's Bureau of Enquiry and Analysis. Air India initially characterised the occurrence as weather-related turbulence, a description that subsequent statements abandoned in favour of acknowledging a sudden and unexplained altitude loss. This shift in official narrative raised questions about what initial assessments may have missed.
A complicating factor emerged when the flight's captain tested positive for marijuana in a confirmatory screening, according to sources familiar with the matter. While investigators have emphasised that no causal connection has been established between the positive result and the altitude loss, the discovery prompted Air India to implement mandatory substance testing for all pilots beginning August 13. The timing and nature of this procedural change underscored the airline's commitment to ensuring comprehensive safety protocols.
The incident occurs at a particularly sensitive moment for Air India, which operates under ownership by India's Tata Group with a significant 25 per cent stake held by Singapore Airlines. The carrier is undertaking a major operational turnaround while managing substantial financial losses and increasingly stringent regulatory oversight. These challenges intensified dramatically following the June 2025 crash of an Air India Boeing 787 in Ahmedabad that claimed 260 lives, India's deadliest aviation accident in decades. That catastrophe exposed systemic vulnerabilities in the airline's safety culture and operational procedures.
Tewolde Gebremariam, the former chief executive of Ethiopian Airlines, is preparing to assume leadership of Air India during this turbulent period. His appointment signals the Tata Group's determination to implement significant structural and cultural reforms within the carrier. The August hydraulic incident, regardless of its ultimate cause, demonstrates that challenges persist across the fleet and highlight the substantial work required to restore confidence in one of South Asia's largest carriers. For Malaysian and regional aviation stakeholders, the incident underscores how quickly catastrophic scenarios can develop even on modern aircraft and reinforces the critical importance of redundant safety systems and rigorous maintenance protocols across Southeast Asian carriers operating similar equipment.
