No fatalities

Float plane crash in Oneko Lake following engine failure (CCCP-50588)

Oneko Lake, RussiaLanding (descent or approach)

On August 30, 1974, a PZL-Mielec AN-2 (registration CCCP-50588) operated by Aeroflot - Russian International Airlines was involved in an aviation accident near Oneko Lake, Russia during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: The accident was caused by an engine failure compounded by improper emergency responses from the flight crew. 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)Source recordUpdated 2026-06-14Data APIEditorial standards

A float plane crashed into Oneko Lake after experiencing an engine malfunction and subsequent pilot error, resulting in no injuries.

What happened

An incident involving a float plane occurred at Oneko Lake when the aircraft experienced a loss of power due to an engine failure. During the emergency following the mechanical malfunction, the flight crew performed incorrect maneuvers or procedures. This sequence of events led to the aircraft crashing into the surface of the lake.

Despite the impact, there were no fatalities and no injuries were reported among those on board. The aircraft was a float plane operating in the vicinity of Oneko Lake at the time of the accident.

Findings

Investigations into the crash identified that an engine failure served as the primary mechanical trigger for the event. However, the investigation concluded that inappropriate actions taken by the crew following the loss of power were a critical factor in the aircraft's descent and subsequent impact with the water.

Probable cause

The accident was caused by an engine failure compounded by improper emergency responses from the flight crew.

Frequently asked questions

What happened in the 30 Aug 1974 PZL-Mielec AN-2 accident near Oneko Lake, Russia?

A float plane crashed into Oneko Lake after experiencing an engine malfunction and subsequent pilot error, resulting in no injuries.

Were there any fatalities in the 30 Aug 1974 PZL-Mielec AN-2 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 30 Aug 1974 involved a PZL-Mielec AN-2, registration CCCP-50588, operated by Aeroflot - Russian International Airlines, at Oneko Lake, Russia.

What was the probable cause of the accident?

The accident was caused by an engine failure compounded by improper emergency responses from the flight crew.