Cessna 182M Precautionary Landing on National Road in Northern Cape (ZS-IAE)

Incident Overview and Flight History On 7 December 2013, a Cessna 182M, registration ZS-IAE, operated by Camel Thorn Adventures CC, departed Springbok aerodrome in the Northern Cape for Thuru Lodge Private Airstrip. The flight was conducted under visual meteorological conditions (VMC) with one pilot and one passenger on board. The pilot, a 55-year-old German national holding a private pilot licence, had a total of 410 flying hours, including 152 hours on type. En route, the pilot observed deteriorating weather conditions and a significant increase in surface wind speeds. Upon arriving overhead Thuru Lodge, the pilot determined that the wind conditions on runway 04 were unsafe for landing, with wind speeds exceeding 30 knots. The pilot then diverted to a nearby private airfield in Groblershoop but found the surface wind conditions to be worse than at the initial destination. ## Precautionary Landing and Impact After flying around the area to assess conditions, the pilot identified a section of the N10 national road where the wind direction and speed were deemed safe for a precautionary landing. The pilot completed the necessary precautionary landing procedures and configured the aircraft accordingly. The aircraft landed on the asphalt road but struck a road traffic sign (chevron) before coming to rest. The impact caused damage to the right-hand horizontal stabiliser of the aircraft. The pilot and passenger evacuated the aircraft without assistance and pushed it clear of the roadway. Both occupants were properly restrained by safety harnesses and sustained no injuries. ## Meteorological and Aircraft Factors The official weather report indicated a temperature of 18 °C, surface wind from 120° at 19 knots gusting to 31 knots, visibility of 10 km, and scattered cloud cover with a base at 8,500 ft. Strong wind gusts were observed, possibly indicating a strong gust front ahead of a thunderstorm south of Sishen. The pilot had obtained a METAR weather report prior to departure but did not obtain a Terminal Aerodrome Forecast (TAF), which may have helped anticipate the weather deterioration. The aircraft, a 1969 Cessna 182M with serial number 182-60010, had 5,072.6 total airframe hours at the time of the incident. The take-off weight of 2,565 lbs was within the maximum take-off weight limitation of 2,950 lbs. The aircraft was equipped with the minimum required navigation and communications equipment, with no recorded defects prior to the flight. ## Investigation Findings The investigation determined that the incident was survivable due to the low kinetic energy associated with the impact. The pilot was appropriately qualified to conduct the flight. The crosswind component on runway 04 at Thuru Lodge would have been approximately 28 knots, which was outside the aircraft's demonstrated crosswind limitation of 15 knots for landing. The pilot had sufficient fuel to route away from the area but determined that the precautionary landing was the safest option available given the poor surrounding weather conditions.