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AAIA publishes investigation report on accident of aircraft forced landing
     The Air Accident Investigation Authority (AAIA) today (November 4) published the investigation report (7/2022) on the investigation into an accident of forced landing involving a Cessna 152 aircraft (registration mark B-HHN) operated by the Hong Kong Aviation Club at Sam Pui Chau, New Territories, on February 26, 2017.
     At 10.32am on that day, the aircraft with two pilots on board took off from Shek Kong Airfield for an Aircraft Rating flight test. After completing the test and during the transit back to Shek Kong Airfield, the Pilot-in-Command noticed the engine was running rough and immediately informed Air Traffic Control. The condition of the engine subsequently deteriorated and the Pilot-in-Command executed a forced landing without power. In the end, the aircraft collided into the flora and trees adjacent to the driving range of Garden Farm Golf Centre at Sam Pui Chau. The aircraft suffered severe damage while the two pilots were not injured. The occurrence was classified as an accident according to the criteria of the International Civil Aviation Organization (ICAO).
     The investigation was conducted by a team of professional investigators in adherence to international standards established by the ICAO. The investigation revealed that carburettor heat was not applied during the unusual attitude recovery manoeuvre as part of the flight test concerned. It was possible that carburettor icing occurred, leading to a rough-running engine. The Pilot-in-Command had to execute a forced landing. Moreover, given the then prevailing ambient conditions, the carburettor was prone to severe icing. The investigation team has made one safety recommendation to the Hong Kong Aviation Club.
     "The objective of the investigation was to identify the circumstances and causes of the accident with a view to preventing recurrence," an AAIA spokesperson said.
     Throughout the investigation, all parties concerned were properly consulted on the report. The report is available for download at the AAIA webpage (www.tlb.gov.hk/aaia/eng/investigation_reports/index.html).
     The AAIA is an independent investigation authority responsible for the investigation of civil aircraft accidents and serious incidents in accordance with the Hong Kong Civil Aviation (Investigation of Accidents) Regulations (Cap. 448B) and with reference to the ICAO's standards.
Ends/Friday, November 4, 2022
Issued at HKT 16:14
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