What happened
On 13 October 2016, a Piper PA-28-235 departed from Manzengwenya airfield in KwaZulu-Natal, bound for Brakpan-Benoni aerodrome in Gauteng. The flight was a private operation carrying a pilot and one passenger. During the flight, the aircraft encountered instrument meteorological conditions (IMC) characterized by drizzling rain and a cloud base of 1800ft AGL.
While flying near the Jozini dam, close to the Mozambique border, the aircraft experienced a catastrophic in-flight breakup. Witnesses reported hearing a loud noise and seeing debris falling from the sky. The aircraft struck the ground in a nose-down attitude, and a subsequent fire destroyed the remaining wreckage. Both the pilot and the passenger sustained fatal injuries.
The investigation
SACAA AIID investigators examined the wreckage distribution, which showed the left wing, vertical stabilizer, and horizontal stabilizer separated from the main fuselage and landed at various distances from the impact site. Analysis of the fracture surfaces on the wing and aileron revealed signatures consistent with upward static overload. No evidence of fatigue or corrosion was found, and an engine teardown confirmed the powerplant was operating correctly prior to the failure.
Investigators also reviewed the pilot's credentials and flight history. While the pilot held a valid South African flight validation, he did not possess an instrument rating. The investigation noted that the pilot had planned to fly to Johannesburg to catch a flight back to Germany the following day, which may have influenced the decision to continue the flight despite deteriorating weather.
Findings
- The aircraft entered IMC conditions, which the pilot was not rated to fly in.
- The pilot likely experienced spatial disorientation due to the lack of visual cues in the clouds.
- In an attempt to correct an unusual aircraft attitude caused by disorientation, the pilot applied control inputs that resulted in structural overstress.
- The left wing separated due to this upward static overload, triggering the in-flight breakup.
- Weather conditions, including drizzle and low cloud ceilings, acted as a contributing factor to the accident.