Runway Excursion Involving Partenavia P-64B at Thabazimbi Aerodrome

Casualties unknown • Runway 25, Thabazimbi Aerodorme, ZA

A private flight experienced a runway excursion at Thabazimbi Aerodrome after the pilot landed deep on a gravel runway to avoid uneven terrain.

What happened

On 3 December 2001, a Partenavia P-64B, registration ZS-VMH, was conducting a private flight in the Thabazimbi district. The aircraft, carrying a pilot and three passengers, initially departed from Thabazimbi Aerodrome using Runway 07. During the flight, the pilot observed a shift in wind direction that made Runway 25 more favorable for landing. Consequently, the pilot performed a go-around to reposition for an approach on Runway 25.

While on final approach for Runway 25, the pilot configured the aircraft with two notches of flap at an approach speed of 90 mph. Because the first 300 meters of the gravel runway surface were uneven, the pilot chose to land further down the runway. Although the touchdown itself was normal, the aircraft maintained excessive speed during the rollout. Despite applying maximum braking pressure, the aircraft began to skid sideways before the pilot regained directional control.

Realizing the remaining runway length was insufficient to stop, the pilot shut down the engine before the aircraft breached the boundary fence. The aircraft then skidded across the adjacent Hammerkop public road, eventually coming to a stop on the far side. There were nil injuries to the occupants, though the aircraft sustained damage to the propeller, the nose-oleo, and a small hole in the left wing.

The investigation

SACAA AIID investigators examined the circumstances surrounding the landing and the runway conditions at Thabazimbi Aerodrome. The investigation focused on the pilot's decision-making regarding the landing point and the impact of the runway surface on braking effectiveness. The inquiry also assessed the influence of changing meteorological conditions on the approach and landing phase.

Probable cause

The primary cause of the excursion was the pilot's decision to land deep on the runway to avoid uneven ground, combined with a degraded braking surface and a potential tailwind component caused by shifting wind conditions.

Frequently asked questions

What happened in the 2001-12-03 Partenavia P-64B accident near Runway 25, Thabazimbi Aerodorme, ZA?

A private flight experienced a runway excursion at Thabazimbi Aerodrome after the pilot landed deep on a gravel runway to avoid uneven terrain.

What aircraft was involved and where did it happen?

The accident on 2001-12-03 involved a Partenavia P-64B, registration ZS-VMH, at Runway 25, Thabazimbi Aerodorme, ZA.

What was the probable cause of the accident?

The primary cause of the excursion was the pilot's decision to land deep on the runway to avoid uneven ground, combined with a degraded braking surface and a potential tailwind component caused by shifting wind conditions.

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