Investigation Summary
The aircraft, wet-leased from Moscow Airways, was attempting a departure from N'Dolo Airport's short runway. Despite reaching takeoff speed, the aircraft failed to lift off. The crew attempted to abort the takeoff, but the aircraft overran the runway threshold, crossing a drainage ditch and a road before crashing into a dense open-air market. While all six crew members survived the impact and subsequent fire, hundreds of people on the ground were killed or severely injured. The investigation revealed the aircraft was significantly over its maximum takeoff weight and was operating illegally, as its airworthiness certificate had expired.
Final Conclusions
The disaster was caused by the operation of an overloaded aircraft from an unsuitable runway by a crew and airline operating without valid authorization. Contributing factors included the lack of oversight by Zairean authorities and the illegal nature of the flight, which was reportedly carrying weapons to UNITA rebels.
Video Analysis
No video analysis linked for this case file yet.
Systems & Failure Modes
Maximum Takeoff Weight (MTOW)
The aircraft exceeded its structural and performance weight limits, preventing it from achieving flight.
Braking System
The high speed and excessive weight rendered the wheel brakes and thrust reversers insufficient to stop the plane on the remaining runway.
Interesting Facts
- 01The aircraft was significantly overloaded, carrying an estimated 2 metric tons over its maximum takeoff weight.
- 02The flight was reportedly part of an illegal arms smuggling operation to UNITA forces in Angola.
- 03The aircraft's airworthiness certificate had expired in 1995, making the flight illegal.
- 04N'Dolo Airport was restricted to light aircraft; the An-32 was too heavy for the facility's safety margins.
- 05The crash remains the deadliest aviation accident in terms of ground fatalities.
Safety Actions & Advisories
Airport Usage Restrictions
Zairean authorities eventually banned large transport aircraft from using N'Dolo Airport, restricting it to light turboprops and general aviation.
Regulatory Oversight
The accident highlighted the 'Lignes Aériennes Congolaises' lack of oversight regarding wet-leased foreign aircraft and crew certifications.