20 fatalities

1989-10-28: De Havilland DHC-6 Twin Otter (N707PV) — Aloha Island Air — Molokai, United States of America

Molokai, United States of AmericaLanding (descent or approach)

On October 28, 1989, a De Havilland DHC-6 Twin Otter (registration N707PV) operated by Aloha Island Air was involved in an aviation accident near Molokai, United States of America during landing or approach. 20 people were killed. Investigators recorded the probable cause as: The airplane's controlled flight into terrain as a result of the decision of the captain to continue flight under visual flight rules at night into instrument meteorological conditions (IMC), which obscured rising mountainous terrain. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781213533Data APIEditorial standards
Aircraft registered N707PV
Aircraft registered N707PV. Photo: Brian T Richards / CC BY-SA 4.0, via Wikimedia Commons

A De Havilland DHC-6 operating as Aloha Islandair flight 1712 collided with terrain near Halawa Bay, Hawaii, while on a night flight from Maui to Molokai. The captain made a navigational error, and low clouds obscured mountains. All 20 occupants were killed.

Accident Overview

On a scheduled passenger flight at night from Maui to Molokai, Hawaii, a De Havilland DHC-6 aircraft, registration N707PV, operating as Aloha Islandair flight 1712, collided with mountainous/hilly terrain near Halawa Bay. The impact occurred at an elevation of approximately 500 feet, shortly after the aircraft had descended over water and crossed the shoreline. The aircraft crashed while on a heading parallel to the island's northern shoreline.

Navigational Error and Weather

Evidence indicated that the captain had made a navigational error and mistakenly believed that he was circumnavigating the northern portion of Molokai Island. Low clouds obscured the mountain tops in the area of the accident.

Management and Oversight

There was evidence of inadequate supervision of personnel, training, and operations by Aloha Islandair management. Additionally, insufficient oversight of Aloha Islandair by the Federal Aviation Administration occurred during a period of the airline's rapid operational expansion.

Occupants

All 20 occupants aboard the aircraft were killed.

Probable cause

The airplane's controlled flight into terrain as a result of the decision of the captain to continue flight under visual flight rules at night into instrument meteorological conditions (IMC), which obscured rising mountainous terrain. Contributing to the accident was: the inadequate supervision of personnel, training, and operations by aloha islandair management and insufficient oversight of Aloha Islandair by the Federal Aviation Administration particularly during a period of rapid operational expansion.