A helicopter crash than killed Ghana's ministers of defence and environment - along with six other people - was caused by poor weather conditions, an investigative committee has found.
The Z9 military helicopter plummeted in a dense forest as it was flying from the capital, Accra, to the town of Obuasi in August. There were no survivors.
After a two-month probe, investigators found that the aircraft lost altitude and lift due to "downdraft", a downward current of air.
The helicopter was "airworthy", the report added, but recommended the Ghana Air Force fleet be modernised as it currently lacks modern safety and navigational systems.
For instance, the 13-year-old helicopter did not have a terrain awareness and warning system (TAWS), a device that alerts pilots to potential ground collisions, Captain Paul Forjoe, a retired commercial pilot and aviation engineer who led the investigation panel, said.
