Casualties unknown

State-Operated Amphibian Impacts Margerie Glacier (N741)

Mt. Fairweather, CA

On March 21, 1994, a Grumman G21A (registration N741) operated by State OF Alaska was involved in an aviation accident near Mt. Fairweather, CA. Investigators recorded the probable cause as: THE PILOT'S IMPROPER DECISION IN ATTEMPTING TO OUTCLIMB THE RISING TERRAIN WITH THE EXISTING AIRPLANE CLIMB PERFORMANCE. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards
Aircraft registered N741
Aircraft registered N741. Photo: U.S. Fish and Wildlife Service / Public domain, via Wikimedia Commons

A state-operated amphibian aircraft impacted the Margerie Glacier after failing to outclimb rising terrain. The aircraft was 1,403 lbs over maximum gross weight, with 80 lbs of frozen water found in the hull bilges. The pilot had not flown since a proficiency check on November 27, 1993.

Accident Overview

A state-operated amphibian aircraft was unable to outclimb rising terrain and impacted the Margerie Glacier. The aircraft came to rest at an elevation of 9,650 feet MSL.

Pilot Information

The pilot had not flown since their last proficiency check, which occurred on November 27, 1993. Proficiency checks for the pilot were conducted by a civilian employee who reported directly to the pilot.

Weight and Balance

The pilot did not perform a weight and balance calculation prior to the flight. The aircraft was found to be 1,403 pounds over its maximum gross weight. Additionally, 80 pounds of frozen water was discovered in the bilges of the hull.

Performance Considerations

At the power and carburetor air temperature settings used by the pilot, the airplane reached its maximum performance at approximately 5,000 feet MSL.

Investigation

The investigation into the accident was delegated to the United States by Canada.

Frequently asked questions

What happened in the 21 Mar 1994 Grumman G21A accident near Mt. Fairweather, CA?

A state-operated amphibian aircraft impacted the Margerie Glacier after failing to outclimb rising terrain. The aircraft was 1,403 lbs over maximum gross weight, with 80 lbs of frozen water found in the hull bilges. The pilot had not flown since a proficiency check on November 27, 1993.

What aircraft was involved and where did it happen?

The accident on 21 Mar 1994 involved a Grumman G21A, registration N741, operated by State OF Alaska, at Mt. Fairweather, CA.

What was the probable cause of the accident?

THE PILOT'S IMPROPER DECISION IN ATTEMPTING TO OUTCLIMB THE RISING TERRAIN WITH THE EXISTING AIRPLANE CLIMB PERFORMANCE. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: THE PILOT'S INADEQUATE PREFLIGHT OF THE AIRPLANE, THE OVER MAXIMUM GROSS WEIGHT OF THE AIRPLANE, HIGH TERRAIN, HIGH DENSITY ALTITUDE, THE PILOT'S…

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X00826. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.