Accident Summary
On 31 July 2003, a Cessna 182D (registration ZS-CSA) operated by a commercial pilot on a private delivery flight experienced an engine failure while on final approach to Lanseria Airport (FALA). The aircraft came to rest inverted in a ploughed field approximately 2 nautical miles short of Runway 06L. The pilot, the sole occupant, was uninjured. The aircraft sustained substantial damage.
Flight History
The pilot, aged 30 with a total of 435.5 flying hours (57.8 hours on type), was tasked to collect the aircraft from Rand Airport (FAGM) following a mandatory periodic inspection and refurbishment, and deliver it to prospective customers at Lanseria. The pre-flight inspection included a fuel check with a dipstick, showing approximately 2.5 inches of fuel in each wing tank, corresponding to 12.5 U.S. gallons per side. The aircraft departed Rand's Runway 29 at 0950Z and climbed to about 6500 feet above mean sea level. By 1001Z, the aircraft was established on long final for Runway 06L at Lanseria at an altitude of approximately 5500 feet. As the pilot continued the descent with one notch of flaps selected, the engine lost power and began running roughly, with revolutions per minute between 1300 and 1500.
Forced Landing and Damage
The pilot was unable to rectify the engine problem and executed a forced landing onto a large ploughed field. On touchdown, the nose wheel dug into the soft ground and separated, causing the aircraft to nose over and come to rest on its roof. The aircraft was substantially damaged, but the pilot escaped with no injuries.
Probable Cause
The investigation determined that the aircraft departed Rand Airport with insufficient fuel reserves, which led to fuel exhaustion and the subsequent engine failure. Although 30 liters (8 U.S. gallons) of fuel were drained from the aircraft after the accident, it is believed that during the descent the remaining fuel—less than the unusable quantity of 10 U.S. gallons for other than level flight conditions—moved to the front of the tanks, exposing the single fuel port located aft of each tank's centerline, resulting in fuel starvation. Additionally, a lack of system knowledge was a contributory factor; the pilot was not aware of the 10 U.S. gallon unusable fuel limitation for other than level flight conditions.