6 fatalities

Aircraft Strikes Power Cables and Crashes into Portland Canal (CF-MSK)

Reef Island, United States of AmericaLanding (descent or approach)

On March 10, 1966, a Grumman G-21A Goose (registration CF-MSK) operated by Pacific Western Airlines - PWA was involved in an aviation accident near Reef Island, United States of America during landing or approach. 6 people were killed. Investigators recorded the probable cause as: The pilot continued the descent under VFR mode in adverse weather conditions and misjudged the altitude and clearance. Low ceiling, snow, unfavorable wind conditions and downdrafts/updrafts were considered as contributing factors. 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)Primary report: the U.S. National Transportation Safety Board (NTSB) historical archive (1962-1981)Updated 2026-07-04Data APIEditorial standards

An aircraft on approach to Reef Island struck power cables, stalled, and crashed into the Portland Canal. The pilot was evacuated while all six passengers were killed.

Accident Overview

On approach to Reef Island, an aircraft descended in marginal weather conditions. The aircraft struck power cables, stalled, and subsequently crashed into the Portland Canal. The wreckage was located a day later. The pilot was evacuated from the scene, while all six passengers were killed. The aircraft sank and was lost.

Weather Conditions

At the time of the accident, weather conditions were poor. Snowfall reduced visibility to half a mile, and winds were up to 35 knots.

Investigation Findings

The official investigation determined that the pilot continued the descent under visual flight rules (VFR) in adverse weather conditions and misjudged the altitude and clearance. Contributing factors included low ceiling, snow, unfavorable wind conditions, and downdrafts or updrafts.

Probable cause

The pilot continued the descent under VFR mode in adverse weather conditions and misjudged the altitude and clearance. Low ceiling, snow, unfavorable wind conditions and downdrafts/updrafts were considered as contributing factors.

Frequently asked questions

What happened in the 10 Mar 1966 Grumman G-21A Goose accident near Reef Island, United States of America?

An aircraft on approach to Reef Island struck power cables, stalled, and crashed into the Portland Canal. The pilot was evacuated while all six passengers were killed.

Were there any fatalities in the 10 Mar 1966 Grumman G-21A Goose accident?

The accident was fatal, resulting in 6 fatalities.

What aircraft was involved and where did it happen?

The accident on 10 Mar 1966 involved a Grumman G-21A Goose, registration CF-MSK, operated by Pacific Western Airlines - PWA, at Reef Island, United States of America.

What was the probable cause of the accident?

The pilot continued the descent under VFR mode in adverse weather conditions and misjudged the altitude and clearance. Low ceiling, snow, unfavorable wind conditions and downdrafts/updrafts were considered as contributing factors.