No fatalities

Emergency Landing in Rio Benito Due to Fuel Exhaustion (HB-UIL)

Rio Benito, Equatorial GuineaFlight

On March 27, 1961, a Noorduyn Norseman (registration HB-UIL) operated by Private Switzerland was involved in an aviation accident near Rio Benito, Equatorial Guinea in flight. No fatalities were reported. Investigators recorded the probable cause as: Fuel exhaustion. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 6 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Source recordUpdated 2026-09-04Data APIEditorial standards

An aircraft owned by Swiss individual Urs Dätwyler suffered an engine failure while en route from Lomé to Libreville. The pilot executed a crash landing in Rio Benito, resulting in total loss of the airframe but no injuries.

Incident Overview

During a flight segment connecting Lomé and Libreville, the aircraft experienced a critical mechanical failure involving its engine. This event necessitated an immediate emergency response from the pilot, who was compelled to attempt a landing at Rio Benito.

Outcome and Damage Assessment

The emergency maneuver resulted in a crash landing. Post-incident assessments confirmed that the airframe sustained damage beyond repair, leading to its total loss. Fortunately, the pilot remained unhurt during the event.

Ownership Details

Records indicate that the aircraft involved was owned by Urs Dätwyler, a Swiss national.

Investigation Findings

The official investigation concluded that the root cause of the engine failure was fuel exhaustion. This determination highlights the critical importance of fuel management protocols during long-haul or multi-leg flights to prevent such hazardous situations.

Probable cause

Fuel exhaustion