Fatal aircraft accident near Palu-Mutiara Airport

13 fatalities • Bainaha Valley, Indonesia • Flight

A charter flight traveling from Palu-Mutiara Airport to Tolitoli crashed into a ravine after striking treetops during a descent.

What happened

A charter flight carrying several tourists departed from Palu-Mutiara Airport, destined for Tolitoli. During the flight, the crew initiated a descent from 9,000 feet down to 5,000 feet in an attempt to provide passengers with a more scenic view of the landscape below.

While performing this maneuver, the pilot identified an approaching mountain directly in the flight path. In an effort to avoid the terrain, the pilot attempted to increase the aircraft's altitude. However, the aircraft collided with treetops situated on a cliff edge, which led to an aerodynamic stall. The plane subsequently plummeted into a nearby ravine.

Search efforts located the wreckage several hours after the impact. Emergency responders managed to rescue one crew member and nine passengers from the site. Tragically, the accident resulted in 13 fatalities, which included both pilots on board.

Probable cause

The aircraft struck terrain after a deliberate descent for sightseeing led to an encounter with a mountain and subsequent stall.

Frequently asked questions

What happened in the 1977-03-29 De Havilland DHC-6 Twin Otter accident near Bainaha Valley, Indonesia?

A charter flight traveling from Palu-Mutiara Airport to Tolitoli crashed into a ravine after striking treetops during a descent.

Were there any fatalities in the 1977-03-29 De Havilland DHC-6 Twin Otter accident?

The accident was fatal, resulting in 13 fatalities.

What aircraft was involved and where did it happen?

The accident on 1977-03-29 involved a De Havilland DHC-6 Twin Otter, registration PK-NUP, operated by Merpati Nusantara Airlines - MNA, at Bainaha Valley, Indonesia.

What was the probable cause of the accident?

The aircraft struck terrain after a deliberate descent for sightseeing led to an encounter with a mountain and subsequent stall.

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