32 fatalities

1956-06-24: Canadair C-4 North Star (G-ALHE) — British Overseas Airways Corporation - BOAC — Kano, Nigeria

Kano, NigeriaTakeoff (climb)

On June 24, 1956, a Canadair C-4 North Star (registration G-ALHE) operated by British Overseas Airways Corporation - BOAC was involved in an aviation accident near Kano, Nigeria during takeoff. 32 people were killed. Investigators recorded the probable cause as: The encounter with an unpredictable thunderstorm cell caused sudden downdraughts and wind reversals, leading to a loss of altitude and airspeed. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781250171Data APIEditorial standards

A four-engine aircraft crashed approximately 1.5 miles from the runway at Kano Airport during takeoff in heavy rain, resulting in 32 fatalities.

What happened

During a departure from runway 25 at Kano Airport bound for Tripoli, a four-engine aircraft encountered deteriorating weather conditions characterized by moderate rainfall. Shortly after ascending to an altitude of approximately 250 feet, the aircraft experienced a rapid loss of altitude. Despite the pilot-in-command applying full engine power in an attempt to arrest the descent, the plane continued to lose height.

The descent resulted in the aircraft impacting a tree and crashing roughly 1.5 miles from the end of the departure runway. The accident resulted in 32 fatalities, consisting of three crew members and 29 passengers. At the time of the accident, meteorological reports indicated visibility of 1,500 yards, winds from 270 degrees at 20 knots, and a cloud base of 2,500 feet.

Findings

Investigations concluded that the primary factor in the accident was the aircraft encountering an unexpected thunderstorm cell during its initial climb. This weather system caused a sudden change in wind direction, heavy precipitation, and likely downdraught conditions that led to the critical loss of airspeed and altitude.

Probable cause

The encounter with an unpredictable thunderstorm cell caused sudden downdraughts and wind reversals, leading to a loss of altitude and airspeed.