Investigation Report on serious incident involving Boeing 787-8 passenger aircraft published
The Air Accident Investigation Authority (AAIA) today (April 7) published the Investigation Report IVR-2025-02 on the investigation into a serious incident involving a Boeing 787-8 passenger aircraft (registration mark VT-ANE) operated by Air India at Hong Kong International Airport on October 20, 2018.
On the day of the incident, the aircraft departed from Indira Gandhi International Airport, India, for Hong Kong International Airport (HKIA). During the approach to HKIA at about 6am, the aircraft descended rapidly, triggering a series of alerts. The aircraft had descended to 280 feet radio altitude, approximately 2.6 nautical miles from the runway, when the crew performed a go-around. The aircraft landed uneventfully on the second approach.
The investigation identified that the cause of the incident was that following the fluctuation of the Instrument Landing System glideslope signal, which resulted in an undesired pitch down and deviation of the aircraft below the intended flight path, coupled with a subsequent delay in recovery by the flight crew, the approach became increasingly unstable. The investigation team has made three safety recommendations to Air India.
The investigation was conducted by a team of professional investigators in strict adherence to international standards established by the International Civil Aviation Organization (ICAO). "The objective of the investigation was to identify the circumstances and causes of the serious incident with a view to preventing a recurrence," an AAIA spokesperson said.
Throughout the investigation, all parties concerned were properly consulted on the report. The report is available for downloading on the AAIA webpage (www.tlb.gov.hk/aaia/eng/investigation_reports/index.html).
The AAIA, an independent investigation authority formed under the Transport and Logistics Bureau, is responsible for the investigation of civil aircraft accidents and incidents in accordance with the Hong Kong Civil Aviation (Investigation of Accidents) Regulations (Cap. 448B) and with reference to the ICAO's standards.