An Air India flight operating from Frankfurt to Delhi triggered an anti-hijacking alert after its transponder displayed the emergency code 7500, prompting security protocols and the aircraft’s parking in an isolation bay. The airline’s engineering team later verified that the alert was triggered inadvertently, and authorities found no actual hijacking threat.
The incident involved Air India flight AI2030, operating on the Frankfurt-Delhi sector with a Boeing 787-9 aircraft registered as VT-TSE. According to the incident report, the aircraft performed a go-around at approximately 9:30 am IST on Wednesday, October 14, before the anti-hijacking alert was communicated to relevant control teams, including Air Traffic Control.
Following the alert, the control room immediately informed the Terminal Control Room Officer. Relevant teams and stakeholders were mobilised in accordance with standard operating procedures, and arrangements were made to park the aircraft in an isolation bay for security-related checks.
After the aircraft was parked, the flight engineer contacted the crew to verify the situation. According to the incident report, the crew said they needed an engineer.
An Air India engineer later clarified that the transponder code had been activated inadvertently due to an error by the transponder operator. The alert was therefore treated as a false alarm, with no actual hijacking threat established during the reported verification.
The incident highlights the importance of promptly responding to aviation security alerts, even when they are later found to have been triggered mistakenly. The 7500 transponder code is internationally recognised as a signal indicating unlawful interference or a hijacking situation, and its activation can trigger immediate security procedures.
In a statement, Air India said flight AI2030, operating from Frankfurt to Delhi, was diverted to Jaipur following a perceived security concern and landed safely.
The airline said the relevant security agencies conducted the necessary checks and cleared the aircraft and crew. All passengers disembarked, underwent security screening, and then reboarded the aircraft.
Air India added that the flight was expected to resume its journey to Delhi shortly after the completion of the required procedures.
The airline also apologised for the inconvenience caused by the disruption, thanking passengers for their patience and understanding. It reiterated that the safety and security of passengers and crew remained its highest priority.
The response involved coordination between the control room, apron control, AOCC, terminal control and other concerned stakeholders. The aircraft’s handling at the isolation bay followed standard operating procedures after the alert.
While the initial activation of the 7500 code prompted an anti-hijacking response, the subsequent engineering clarification and security checks indicated that the incident was a false alarm rather than an actual hijacking.
The incident underscores how a mistaken transponder activation can trigger a significant aviation security response, requiring immediate coordination and verification before normal flight operations can resume.