The long-anticipated official inquiry report into the fatal crash of a Ghana Air Force Harbin Z-9 helicopter on August 6, 2025, has been made public, offering insight into the tragic incident that resulted in the deaths of eight senior personnel and crew members.
Compiled by a joint panel comprising representatives from National Security, the Ghana Armed Forces, the Aircraft Accident & Incident Investigation and Prevention Bureau (AIB Ghana), and supported by U.S. experts, the Ministry of Defence (MOD) report outlines pivotal findings that clarify the circumstances surrounding the crash.
Investigators examined flight data recorders (FDR), cockpit voice recordings (CVR), fragments of the wreckage, weather data, and eyewitness accounts to reach a thorough and conclusive understanding of the event.
Revealed today (November 11) at Jubilee House by Captain Paul Forjoe, a retired pilot and investigator with AIB Ghana and a member of the inquiry board, the report identified a dangerous combination of unfavorable atmospheric conditions and significant systemic safety lapses.
The probe determined that although the immediate trigger was a sudden meteorological disturbance, the aircraft was missing essential contemporary safety systems that might have supported the crew in managing the situation.
The final report concluded that the immediate cause of the crash was a sudden downdraft-induced loss of altitude over rugged terrain in poor visibility. Although the aircraft was deemed airworthy and certified for flight, it lacked critical modern safety systems that could have helped the crew navigate the adverse conditions.
Key Findings from the Investigation;
Sudden Loss of Lift Due to Downdraft: The helicopter lost altitude abruptly without any change in power or pitch, consistent with a powerful downdraft.
Adverse Terrain and Weather: The flight path over rising terrain and through low visibility created conditions ripe for turbulent wind currents.
Limited Weather Information: The crew relied solely on aerodrome reports from Accra and Kumasi, which indicated poor weather, including low cloud ceilings in Kumasi.
Transition to Instrument Flight: Initially flying under Visual Flight Rules (VFR), the helicopter entered cloud cover at 09:56 and transitioned to Instrument Flight Rules (IFR). It crashed just two minutes later.
Impact Location: The helicopter struck a ridgeline 1,370 feet above sea level, approximately 6.5 miles from its destination in Obuasi.
Missing Safety Equipment: The aircraft lacked essential systems such as Terrain Awareness and Warning System (HTAWS/EGPWS), terrain-mapping navigation, and an Automatic Flight Control System (AFCS).
National Infrastructure Deficiencies: Ghana’s limited navigational infrastructure and lack of en route weather services contributed to the systemic risks.
No Real-Time Monitoring: Air Force operations lacked Flight Data Monitoring (FDM) and real-time tracking systems like Secondary Surveillance Radar or ADS–B.
Training Gaps: The crew had no access to simulator-based recurrent training, reducing preparedness for complex scenarios.
Crew Competence Confirmed: Both pilots were FAA-certified and medically fit, ruling out human error or health-related factors.
The investigation also noted that weather delays had postponed the helicopter’s departure from Accra by over an hour. Once airborne, the crew encountered low clouds and the treacherous ridgelines of the Ashanti region — known for generating violent turbulence and sink rates.
Despite adherence to maintenance protocols, the lack of advanced navigation and safety instrumentation left the crew vulnerable. The board, which included international technical advisors, conducted a thorough review of mechanical, human, and systemic factors.
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