What happened
On the morning of 13 September 2012, a Beech F33A, registration ZS-TVR, departed Pietermaritzburg aerodrome (FAPM) for a return flight to Newcastle (FANC). The flight, which was a private operation, began after the pilot and two passengers had attended a local agricultural conference.
After receiving clearance to depart under special visual flight rules (SVFR) at 1507Z, the aircraft climbed away from runway 1s. Approximately ten minutes into the flight, a witness observed the aircraft descending through the clouds in a steep spiral. The aircraft continued in this uncontrolled attitude until it struck dense vegetation and mountainous terrain near Ophatha, near Cato Ridge. The impact was followed by a post-crash fire that destroyed the aircraft. All 3 occupants were fatally injured.
The investigation
SACAA AIID investigators examined the flight history and environmental conditions leading up to the accident. The investigation noted that while the aircraft had landed at Pietermaritzburg earlier that morning, no new fuel had been uplifted for the afternoon departure.
Investigators also reviewed the pilot's records, noting that while the pilot possessed a night rating, his pilot licence was technically invalid at the time of the accident due to an unpaid annual currency fee. Furthermore, a commercial pilot landing at the same aerodrome around the time of departure reported significant thunderstorm activity in the area, which had forced other aircraft into holding patterns. The investigation focused on the transition from visual flight into adverse weather conditions.
Findings
- The pilot likely experienced spatial disorientation after the aircraft entered thunderstorm activity.
- This disorientation led to a loss of control, resulting in a spiral dive.
- The aircraft had insufficient altitude to recover from the descending attitude before impacting the terrain.
- The pilot was operating under a pilot licence that was invalid due to non-payment of required regulatory fees.